Complex sentence: After Warlord's ships are destroyed by Jenny Blitz, Sonar joins in a mutiny against Deathstroke, but Deathstroke and Blitz overhear this and kill the crew members for their treachery.
Split into simpler sentences: After Warlord's ships are destroyed by Jenny Blitz, Sonar joins in a mutiny against Deathstroke. However, Deathstroke and Blitz overhear this and kill the crew members for their treachery.