The twins struggle to keep a secret from their mother.

Mel attempts to avoid celebrating her birthday while remembering the past. Doc confirms his troubling diagnosis and begins looking for his replacement.

The ladies treat Maggie to one last hurrah before the baby’s arrival, and the guys attend a Bruins game for the last time. Meanwhile, Eddie toys with the idea of…

Sam and Dean respond to a frantic call and together along with Castiel, Jack and Jody, assist in an extraordinary and heartbreaking rescue. Billie surprises everyone with a visit to…