Ted's friends get involved when he doesn't do a background check on his new lady friend; Lily and Marshall deal with learning their baby's gender.

Arizona tries to reconcile with Callie, who has big news to share; Teddy faces an important decision; the residents receive new interns; the Chief makes an announcement.

Nick pretends to be gay to make his status as Jess’ “ex” less of an issue to her new beau. To Coach’s annoyance, Winston works his “Long Game” on their attractive neighbors, Michelle and Viv. Meanwhile, Schmidt panics when Cece considers having a breast reduction.

Rossi's daughter, a journalist, investigates the disappearance of a college student; JJ comes back from maternity leave.

The team searches for a killer who calls the authorities before committing his crimes; as Rossi prepares for a visit with his daughter, he gets news about the death of an old friend.

Rossi prepares to marry Krystall; the team investigates a series of fatal shootings following car accidents.

The BAU tracks a conflicted killer in Virginia who feels remorseful after committing crimes; Rossi receives a visitor.

A "super mom" inspires Ben to clean up his act; Emma's grabby hands get Bonnie and Riley in trouble for shoplifting.

April faces a series of "lasts" as her wedding date gets closer.

All the planning is done and the day is finally here – the day April Carver marries Leo Hendrie. What should be the most perfect day of April’s life takes a bumpy detour as nerves and secrets threaten to ruin everything. Can Leo and April’s love triumph or was this a “pity” wedding after all? Meanwhile, Dominic struggles with what to do as the deadline nears of losing the woman he loves forever.