A tragic event is set to lead Callie to discover something in "The Foster" season 3 episode 20, the season finale. Also, the episode will see her try to fix her dynamics with AJ while Brandon talks about Mason.

"The Fosters" season 3 episode 20 is entitled "Kingdom Come" and it serves as the final episode of Freeform's drama series. According to Spoilers Guide, the Adam Foster family is set to face a tragedy, which leads the family to pull together and search for answers. Also, Callie will be led to an epic discovery. As per the publication, this revelation is set to question her faith.

Episode 20 is also set to see Nick give an expensive present to Mariana, which just adds to the latter's sense of guilt on what had transpired between her and Mat. Moreover, the episode will see Brandon tell his mother that Cortney had a child and soon finds himself in a difficult scenario when the latter was kicked out of their apartment.

Callie is also set to iron out things with other people surrounding her, such as AJ. According to Enstarz, the former is going to try to mend her relationship with the latter in "The Formers'" final episode. In her interview with TV Line, Maia Mitchell, who plays Callie in the show, said that fans would see her try to mend that relationship, but that was not fully resolved. The actress added that fans were going to have to wait until season 4 for the resolution

Meanwhile, Brandon is planning to tell Lena and Stef about Mason in episode 20. According to Carter Matt, he clarifies with the latter two that Cortney had a child in Mason, pointing out that it was actually not a subject for an argument. As per the publication, this indicates that Brandon is not really eager to talk about the matter in depth.

"The Fosters" season 3 episode 20 is set to air on Mar. 28 on Freeform.