We have titles for season 13 episodes 15-18.
 
 
Episode 13.15 - A Most Holy Man
Episode 13.16 - Scooby Natural
Episode 13.17 - The Thing
Episode 13.18 - Bring 'em Back Alive
 
Previous titles
 
Episode 13.05 - Advanced Thanatology
Episode 13.06 - Tombstone
Episode 13.07 - War of the Worlds
Supernatural - Episode 13.08 - The Scorpion and the Frog
Supernatural - Episode 13.09 - The Bad Place
Episode 13.10 - Wayward Sisters
Episode 13.11 - The Midnight Train
Episode 13.12 - Various & Sundry Villains
Episode 13.13 - Devil's Bargain
Supernatural - Episode 13.14 - Only the Best Intentions
 
What do you think? Who is the "Most Holy Man"? What is "The Thing"? Who needs to be "Brought Back Alive"? Let us know in the comments or in the discussion threads for episodes 15, 16, 17 and 18.