Superlatural Stories

(If you've never seen BBC Sherlock then you might not understand this book sorry) Dean has deducing skills. (So he has Sherlocks deducing skillz) But when an unknown being kills the people he's closest to, he doesn't know if he can carry on or even find out what killed them. Without Sam's encouraging smile or Cas' reasuring hand on his shoulder, he's not sure how he's going to solve this case, even with his amazing mind palace.