While the Men of Letters would not be seen on the show until season eight's "As Time Goes By," their existence was hinted at early in season four of Supernatural when Dean traveled back in time.

The opportunity to wipe out entire species of monsters is tempting, but everything the British Men of Letters promise is too good to be true. They think they’re BAMF like “We eliminated 90% of ...

Sam and Dean find the Men of Letters secret hideaway filled with every scroll, secret, spell, and supernatural information that they collected. Sam uses the library to discover a case involving ...

Katie Yu/The CW “Supernatural” ended on a nail-biting cliff-hanger in Season 11. In the season finale, a member of the British chapter of the Men of Letters named Lady Toni Bevell seemingly ...