If you like "Castle", then you might enjoy...

Elementary is a modern take on the classic stories of Sherlock Holmes. Sherlock is now living and working as a detective in New York, although he lived and worked in England earlier. He works as a consultant to the NYPD and is assisted by the beautiful Joan Watson, a former surgeon, who now works as a sober companion. She is originally hired to help Sherlock stay away from his coke habit but also ends up as an assistant for Sherlock.

It`s not the best Sherlock series, but it is still a good show. Interesting to have a female Dr. Watson.

Elementary is also a police procedural with humor and seriousness mixed. The main characters also work tightly with the police without being police themselves, but they are highly skilled private investigators. Can Sherlock Holmes be anything but highly skilled? Give Elementary a try if you like Castle, they have many similarities.

Charles Eppes, a mathematician, and his brother, Special Agent Don Eppes teams up to solve criminal cases for the FBI together. Charles and his friends from CalTech University and uses equations to help solve various crimes.

This is a cool series. I have watched it a couple of times. It`s interesting to see how they use different algorithms to solve criminal cases. Like most shows, they do simplify things. Some of the data points are much too complicated to gather in the time they do and some of the data is way too generalized to get so exact results as they get. I could keep going, but this is not important. This show still rocks.

Numbers is also a police procedural show with a consultant, Charlie Eppes, that helps out when the law enforcement, FBI, need help on special cases. Numbers focus more on looking serious and scientific about how professor Eppes helps to solve cases. Check out Numb3rs if you like Castle.

Neal Caffey, a charming con artist, escapes from a maximum-security prison, only to be recaptured by FBI Agent Peter Burke. But instead of going back to prison he is given the choice to help the bureau bring down other elusive criminals in exchange for his eventual freedom.

This is an interesting show, lots of cons and tricks. Cool to watch. If you like crime shows, then you should give it a try.

Neal Caffrey is also working as a consultant for law enforcement, the FBI in his case. Only Neal is a con man, and he is not working entirely willingly with the police. Its also mostly a light-hearted and witty police procedural. Definitely give White Collar a try if you like Castle.

Shawn Spencer posing as a psychic, he does this with his fail prof memory and excellent attention details. He and his best friend Gus is hired by the police after they manage to cons them into thinking that Shawn is a real psychic with powers that help to solve crimes.

Psych is a hilarious show full of witty commentary. I haven't seen the last seasons, but I want to do it if I get time. This is a delightful show that will give you plenty of laughs.

Psych is less serious and relays more on comedy than Castle and the crimes are less serious. But it does have similar quick witty interactions and usage of cultural references like Castle. So give Psych a try if you like Castle.

Captain Malcolm 'Mal' Reynolds, a former galactic war veteran, is the captain of the transport ship Serenity. He is kind of like Han Solo from Star Wars, a small-time smuggler hiding behind his legal transport services. His crew consists of Zoe, his old war buddy and Wash, the pilot and Jayne Cobb, the muscle and Kaylee Frye, the mechanic and Simon Tam, the medic and River, Simon`s sister and Inara Serra, a courtesan and Shepherd Book, a preacher. Together they do any jobs, legal or illegal. They travel across the outskirts of outer space sparking up trouble wherever they go.

This is a superb show. I can't fathom why it got canceled after only one season. I want a new show like this.

Nathan Fillion is the main character in Firefly too. That's it, that's the main reason for checking it out, and that Firefly is an excellent show. If you like Nathan Fillion and Castle then you definitely will like Firefly.

Patrick Jane a former famous psychic outs himself as a fake after a serial killer called Red John kills his family. Jane blames himself because he right before the murder where mocking Red John on national TV in his psychic persona. He starts working as a consultant for the California Bureau of Investigation so he easier can hunt down Red John. His skills as a mentalist, ex psychic comes in handy when working on cases because he is exceptional at drawing logical conclusions from minute details.

This is a really good show. They drag the Red John story out a little too long, but that`s OK since the main part of the show is the individual cases and the relationships between the characters.

The Mentalist, just like Castle, is also a police procedural kind of show, and both main characters are consultants. Only Patrick Jane is an ex mentalist (con man), while Castle is a famous crime author.

Dr. Cal Lightman is a deception specialist that reads the truth from people`s faces. He has partnered up with Dr. Gillian Foster to create the Lightman Group, selling their services as deception experts. His personal team also includes Eli Loker and Ria Torres. They also start to cooperate with the FBI with Ben Reynolds as their liaison. They tackle all kinds of cases using their skills to look for deception.

This is a really good series. It`s interesting to see how facial and body reading is used to solve cases.

Lie to Me and Castle are both police procedural kind of show, but in "Lie to Me" they do not always just work on criminal cases. Lie to Me also focus on looking more scientific and serious.

This show follows a team from the Behavioral Analysis Unit (BAU), a subsection of the FBI. They travel to local police stations to investigate serial killings or other crimes likely involving a mentally distorted unsub (Unknown or unidentified subject). They use profiling to track and apprehend the unsubs. This means they are using psychology and statistics to come up with the basic characteristics of the unsub and the victims.

This is one of the more interesting criminal shows. I watched up to season seven, I think, but then I fell off. But this show is definitely worth giving a try.

Castle and Criminal Minds are actually not too similar, but both shows kind of goes into the mind of criminals. Alto Caste is more on the funny and less scientific side.

Dr. Temperance "Bones" Brennan, a highly-skilled forensic anthropologist, and her team join FBI, with Agent Seeley Booth as their handler, in solving crimes where only the bones of the victims are reminding.

Bones is one of the better forensic crime shows. It is based on a book series, but it actually has very little in common with the books.

Bones is also a police procedural, and just like Castle it has riddles and clues and a bit of humor, but it's more serious than Castle.

Lucifer Morningstar is bored with his life and duties as the lord of hell. He decided to take a vacation in the city of angels where he owns one of the cities most prestigious nightclubs and lives a life full of delicious sin. But when one of his clients, a woman he has given a favor to in exchange for a future unspecified favor, is gunned down he teams up with an LAPD detective to solve the case. Lucifer is so smitten with this detective that he decides to join the LAPD as a consultant using his skill to draw out people's deepest desires and wishes to solve crimes.

I love this show. I know it`s jet another crime show with a specially gifted but flawed main person, but I still like it. Some people get in a fizzy fit because the TV show goes too far away from the comic it`s based on, but I have never read the comic books so I don really care about that.

Lucifer is very much like Castle, only Lucifer is not an author, and it contains supernatural elements.

Charlie Crews an LAPD detective was wrongly imprisoned 12 years for a murder he did not commit. He got a $50 million settlement when he was released, and he still chose to go back to work as a detective. His years in prison changed him. He got a new spiritual outlook on life, a strong fondness for fruit, and a highly unusual approach to solving crime

This is a really good show. I don`t understand why it only got two seasons, it deserved many more. Oh, and the actor playing Charlie is the same guy who plays in Homeland.

Derrick Storm is a private investigator so skilled that he is routinely hired by the CIA to help out. Gregor Volkov, Derrick Storms arch-nemesis has been spotted again, and the CIA is calling in Derrick to help out. Derrick get entangled with a beautiful and mysterious foreign agent and they discover that Volkov's has embroiled a wealthy hedge-fund manager and a U.S. senator in a plot that could destroy the global economy.

Derrick Storm is written by Castle and talked about in the show. The style is reminiscent of the show, but the setting is different. So if you like books then checking out the Derrick Storm books if you like the tv show Castle.

Nikki Heat is a very skilled homicide detective that leads one of New York Citys top homicide squads. One day she is slapped with an unusual challenge by the commissioner, he has given her the command to let the superstar journalist Jameson Rook ride along with her on homicide investigations to research an article NYPD. Pulitzer- Prize-winning journalist Jameson Rook is as much a handful as he is handsome. His wise-cracking and meddling are seriously challenging Nikki's detective skills.

The Nikki Heat books are OK crime books. There are plenty of better crime books out there. But if you like the TV show castle then they are worth a try.

The Nikki Heat books are written by Castle himself and talked about in the show. The Nikki Heat books are also very similar to Castle.