The Fosters 4×12 “Dream a Little Dream” Season 4 Episode 12 Sneak Peek – While in the hospital, Jesus dreams of a nightmare world where he tries to save Mariana, on an all-new episode of “The Fosters,” airing Tuesday, February 7th, on Freeform. As Stef and Lena stand vigil over an unconscious Jesus, he dreams of an alternate world wherein he tries to save Mariana but can’t get to her. Already stretched thin, the moms receive news that Callie is in serious legal trouble. Mariana seeks comfort in Mat’s arms, while Brandon tries to hold the family together. “Dream a Little Dream” was written by Joanna Johnson and directed by Rob Morrow.