Season 4

Sam's living situation with Zahid gets off to a rocky start, while Elsa struggles with her son's departure. Casey weighs telling Doug about Izzie.

Casey's demanding schedule starts affecting her grades, while Sam seeks out some extra credit himself. A chance run-in revives old suspicions for Elsa.

A change at work leaves Sam scrambling for cash. When Izzie fights the school dress code, Casey feels conflicted. Paige discovers a knack for management.

Casey and Izzie face fallout from the protest. Paige tries to prove her mettle to Casey through strange tasks. Doug avoids dealing with a painful loss.

As Sam gets ready for an adventure, Elsa thinks about ways to discourage him. Casey gets an up-close look at Izzie's tense home life.

Sam seeks a worthy caretaker for Edison. Casey tries to be supportive of Izzie, but her plan backfires. Zahid shares tough news with Sam.

Elsa makes a meaningful reconnection. Paige plans a romantic night with Sam. Pressure mounts on Casey ahead of a big track meet.

As Casey reaches a crossroads, she finds herself questioning a lot of things. But in the meantime, she helps Sam get over a hurdle of his own.

Casey and Sam fume about their parents meddling in their lives. Zahid hosts a big send-off for something near and dear.

Sam deals with a big disappointment, Casey clashes with Elsa over college plans, and a recurring dream vexes Doug.