All season long, The Fosters' Callie (Maia Mitchell) has been playing detective to try and free her former foster brother from prison, where he's serving time for a crime that she believes he didn't commit. We've seen her go to extreme lengths, including breaking into a different suspect's house to steal his toothbrush for a DNA test.

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Well, guess what? Callie's dangerous snooping will pay off in the summer finale, when she finally gets the DNA results back and finds out who really killed Mrs. Johnson. But she may already be in too much trouble to do anything about it.

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