Sons Of Anarchy: 20 Most WTF Moments

20. The Accidental Killing Of Donna

It's not that the first season of Sons Of Anarchy wasn't pushing boundaries on the regular, but in comparison to some of the mayhem that was to come? It looks like a heart-warming family comedy by comparison. That was, until the final episode of the season, when some simmering tensions that had been building throughout all came to a head.

Trying to break up SAMCRO from the inside, ATF Agent Stahl cunningly frames member Opie as an informant. Clay totally buys it, and sends Tig to go out and silence him. That's crossing a line as it is – killing a fellow member of the gang – but in light of what Clay thinks he knows about Opie, it's justified. Except it all went wrong.

Opie swapped cars that night with his wife Donna, so she's the one who gets mowed down in a hail of bullets courtesy of Tig. Which happened to coincide with the moment Clay realised Opie wasn't actually ratting them out. Urk. That was the moment all bets were off: Clay accidentally murdered one of his brothers' wives. 

Who knew what else could happen...