Of course you realize this means war

The (not) funny part is that my personal headcanon is that William decided to be a bit more "creative" with Cassidy and just shoved her in a springlock suit and purposely set it off... Starting with the neck to cut her vocal chords like in The New Kid and just checked in once and a while to make sure she died
Needless to say Cassidy was p*ssed

Yeah, I can see why Cass would be ticked

William regretted it... Because of the amount of blood he had to clean