After a shocking death, Clarke and Finn grow closer. Bellamy must keep the group from turning on one another and Abby takes a huge risk.

In The 100 S01E03, A fast-moving, toxic fog jeopardizes a mission to find a substance that could save Jasper’s life. Clarke learns the truth about her father’s betrayal.

Having discovered that Jasper may still be alive, Clarke, Bellamy, Octavia, Finn and Monty set out on a mission to locate their friend.

One hundred young exiles from a dying space station are sent to Earth 97 years after a nuclear apocalypse to test if the planet is now inhabitable.

Callie joins a group home after committing a crime. Brandon tells the truth about the reason Callie ran away. Meanwhile, Mariana helps with the school play to impress a guy named Chase.

Will and Whispers each race to piece together the other’s location, while Lito heads to his first movie premiere since the photos leaked.