Complex sentence: By sheer bad luck, it turns out that the "femme fatale" had also been picked up by Haskell earlier; she scratched him deeply in the arm and got out after he tried to become too friendly.
Split into simpler sentences: By sheer bad luck, it turns out that the femme fatale had also been picked up by Haskell earlier. She scratched him deeply in the arm and got out after he tried to become too friendly.