The synopsis for Supernatural season 14 episode 17.
 
SUPERNATURAL
“Game Night”— (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV)
IT’S ALL FUN AND GAMES UNTIL SOMEONE GETS HURT – Sam (Jared Padalecki) and Dean (Jensen Ackles) race to help a friend in need. Meanwhile, Mary (guest star Samantha Smith) is concerned for Jack’s (Alexander Calvert) wellbeing, and Castiel (Misha Collins) enlists help from Jo/Anael (guest star Danneel Ackles) to track down a miracle. The episode was directed by John Showalter and written by Meredith Glynn. (#1417). Original airdate 4/4/2019.

Source:

The CW

 
Who is the friend in need? What miracle is Cas looking for from Jo/Anael? Why is Mary so concerned about Jack? Let us know in the comments or in the discussion thread for episode 17