Secrets, secrets are no fun.
Secrets, secrets... they'll kill everyone?
On The Vampire Diaries Season 5 Episode 19, both Damon and Stefan committed a rather grisly murder, but at least the former ended up owning up to his act.
Stefan, conversely, didn't tell Damon about killing Enzo (who is now chillin on The Other Side), a development that we'd have to guess will come back to haunt him at some point in the near future.
Most of the hour was spent on Enzo flipping out once the truth about Maggie was revealed (Damon, unaware of who she was, killed her on the night JFK was elected), even kidnapping Elena at one point.