Lilly heard a noise in the woods. Upon searching, Levi and Eve found Isiah. He was hurt. Sam fixed him up, and Eve and Ty thought they should return him in good faith.

Isiah doesn't believe the sky people are evil.

They brought Isiah back and asked for some tips on survival skills.

Paara takes the others to a garden and explains their history and how they formed peaceful relations.

Lilly is in the woods alone. Veronica tries to take her. Sam wants to arrest her. Marybeth thinks that's harsh and upsetting Lilly.

Gavin has a vision of Eve and Levi with the fort people. Isiah tells Eve about his family.

Levi accuses Silas of kidnapping Eddie. Paara says there is another killer. Isiah is kidnapped.

Gavin finds Izzy by the lake. He finally tells her what he and Sophia are up to and attends a sinkhole vigil with her before going to Ella's house with Sophia. She meets Sam's son.

The younger group wants to untie Veronica. Riley catches her dad and Marybeth arguing about it.

Josh comes running, saying something is wrong with Veronica. She's having a panic attack. Marybeth gets the cuffs off and her out of the car. Sam recognizes the anxiety-induced attack and starts chest compressions.

She starts breathing, and Lilly rushes to hug her.

Riley is worried about Sam. He tells about serving in the war and his PTSD. He said he ran out of his anxiety pills. Riley is understanding, and they hug.

Rebecca had Isiah, saying how important he was. Silas wouldn't let her hurt him.

Silas knifed Rebecca, and the others got her to the village. She insisted that Eve help Isiah.

In parallel cliffhanger scenes, it was revealed that Gavin was really the young boy Isiah and he must have lived there before.