The synopsis for episode 17
“The British Invasion” — (8:00-9:00 p.m. ET)

THE WINCHESTERS FIND KELLY KLINE – Sam (Jared Padalecki) and Dean (Jensen Ackles) get a lead on Kelly Kline’s (guest star Courtney Ford) whereabouts. Mick (guest star Adam Fergus) drops by the bunker unexpectedly and decides to join the hunt. John Showalter directed the episode written by Eugenie Ross-Leming & Brad Buckner (#1217). Original airdate 4/6/2017.
And we're back to Lucifer's kid. How will everyone react to the Kelly and her baby?. Will Sam and Dean want to protect Kelly and thereby protect the child? Will Mick want to kill Kelly to stop the child? Or will there be a different dynamic? Let us know in the comments or in the discussion thread for episode 17.