Homes and Watson get a look into Captain Gregson's private life when they investigate after masked men invade the Captain's home.
When Holmes and Watson discover an assassin's body, they must delve through the mob world for an answer. Watson helps a friend find the man of her dreams.
As Holmes and Watson investigate the murder of a financial consulting company's CEO, a mysterious woman from Holmes' past surfaces as a suspect.
Watson and Holmes search for the civil contractor responsible for leaking classified information but soon find themselves targeted by cyber activists. Joan decides to sign up at an online dating service.
Holmes and Watson investigate the murder of a well-respected mathematician and look into the guarded equation he was trying to decipher. Watson is at a loss when a former patient's son asks her for a loan.moreless
Holmes and Watson head to London for an unsolved mystery investigation and to look up his former mentor, Gareth Lestrade. Sherlock joins up with his estranged brother, Mycroft, who discloses some secrets.
A group of protesters breaks into the NYPD precinct after the police are suspected of killing an unarmed man. Mac and Flack find themselves caught up in the chaos as the team makes a fast move to try and solve the case. On the personal side, Mac contemplates his future with Christine.moreless
At Valentine's Day the CSIs get a taste of both the sweetest and the sourest that life can offer as they work on three twisted tales of love gone wrong.
A couple of graffiti artists, who vandalize their district using the tag 'Murderer', will find their sign a very close reality when a body is dumped at their feet.
The CSIs lead an investigation after the body of a masked man found at the bottom of a notorious skyscraper adds to the mysterious count of deaths that form part of the history of the building. Meanwhile, Jo runs into a stranger with an unexpected link to her past while enjoying a day off.moreless
Two men are found dead with a common feature: both have been killed using unconventional methods. Meanwhile, $1 million anonymous checks are left around the city by someone known as the Guardian Angel.moreless
The co-owner of a popular bar is found dead. Meanwhile, Adam is forced to come to terms with his past so he can look ahead.
Detective Lovato's past as an undercover officer tangles up with her present duty when one of the gang members she ingratiated herself in and developed feelings for turns up tortured and killed.
The murder of a man named Luke leads the CSI team into the world of performance enhancement drugs; Lindsay is forced to revisit a hurtful past upon returning to Montana to witness the execution of Daniel Katums.moreless
The CSIs realize that the latest bodies discovered answer to some psychopath reenacting the game of CLUE in real life.
The CSIs discover the body of a woman dressed in a ballgown after draining a lake in search of a murder weapon. Adam entertains two little girls who are stuck waiting for their mother at the NYPD bullpen with a tale of intrigue.moreless
An cold case unsolved for twenty years about the disappearance of a young boy suddenly heats up again when the main suspect in that long ago crime is found dead.
Lindsay becomes injured during the attempted murder of a political candidate. The CSI team race to catch the shooter and the events in the aftermath lead to a child's death.
When evidence surfaces in form of several pictures at a crime scene on the Brooklyn Bridge, the CSIs rush to San Francisco to search for a 16-year-old girl who might be dead already. The case hits home for Jo.moreless
The team has to try and stop serial arsonist Leonard Brooks after he starts to use fire as a weapon to hurt people from his dark past.
The team leads an investigation when a fire chief, a friend of Mac, ends up dead in a blaze that used the same technique as a recently paroled arsonist.
A violent shooting leaves Mac in a limbo between life and death and with a choice to make. While he struggles for his life, it's up to his team to bring the shooter to justice.moreless
Mac and his team try to get to the bottom of the murder of a successful businessman who still felt the pull of his old neighbourhood by going to a Brooklyn housing project and speaking to the victim's old friends and neighbours.moreless
A wave of brutality threatens a small New York City community. As Flack investigates a crime after a body is found dismembered and strategically left out on four street corners he is surprised by an explosion.moreless
Mac's team has to figure out if a high stakes tournament lead to murder and hence the CSIs find themselves immersed in the world of competitive video gaming.