11x08 Just My Imagination
First Aired: Dec. 02, 2015 on The CW
Summary: Sam is shocked when his childhood imaginary friend Sully makes an unexpected appearance. Sam can’t understand why he’d see Sully now but what’s even more surprising is that Dean can see him, too. Flashbacks reveal young Sam’s friendship with Sully and why he needed him.
Guest Stars[no credits found]