Will decides to trust an old friend. Jennifer visits Katie while Bram meets the camp commandant.

Jaha makes a surprising move. Clarke gets help from an unexpected source. Lincoln seeks revenge.

Lincoln and Bellamy’s efforts to get into Mount Weather has some brutal consequences.

Clarke is faced with a difficult choice and Raven helps Bellamy navigate Mount Weather as Dr. Tsing begins to harvest the 47, while Jaha and Murphy encounter a stranger on…

Clarke begins to question Lexa’s leadership decisions and Indra continues to push Octavia. Meanwhile, at Mount Weather, Jasper steps up into the role of leader, and Cage throws Maya into…

Lexa and Clarke get into a heated discussion during battle preparations; Bellamy races against time.

Wick and Raven are faced with a setback. Maya and Jasper witness a terrible act.

Bellamy is able to get Clarke to agree to accompany him to the drop ship. Dr. Tsing is in charge of a deadly experiment.

Lexa and Clarke manage to make a deal.The newly created alliance is under threat. Monty comes up with a plan.

Kane takes part in a mission to make peace with the Grounders. Jasper decides to take part in a risky experiment. Lincoln enters a world of pain and President Dante…

Tensions are running high between Clarke and Finn. Raven finds out that Mount Weather is interfering with their communication systems.

A seemingly perfect jewelry heist ends in murder and when crime scene evidence is stolen from the lab, and Delko returns to find the culprit.

The evidence on who shot Horatio leads the team to some of most Miami’s dangerous including one of their own.

There’s a serial killer on the loose marking all of his victims with a Y on their chests and one or more of the csi’s lives are in danger in…

After a young woman is found dead shortly after she was auctioned off for charity, the team finds that the woman was trying to uncover the true nature of the…

After Nick is found to have been killed with all the evidence pointing to Natalia as the killer the rest of the team has been sidelined by the Internal Affairs…

Calleigh is run off of the road in to a canal and causes freshly collected evidence to be compromised. The team must work to find new evidence, as most of…

The CSI’s investigate the murder of a male model and have to figure out the inner workings of the modeling world in order to find his killer.

The team investigates the puzzling death of a student and find evidence that Tim Speedle may not be dead.

The murder investigation of a sports legend has complications when his body is lost by the lab.

Strange events begin to happen as the CSI team tracks down a serial killer who killed during a solar eclipse.

When the team is investigating the murder of a probation officer and a hostage situation, Horatio learns that the main suspect could be his son.

Allegations against the Strike Team are front-page news, and the team is broken up pending the investigation. Vic and Claudette find themselves following the trail of a meth batch, while…

Bailey tries to impress Kate’s father; Charlie balks at the constant comparisons with his own dad.

Five children orphaned by their parent’s fatal auto accident seek to make their way in San Francisco.