Complex sentence: Hoping that his performance will pick up again with the return of his hand, Lindsey's superiors arrange for him to receive a mystical transplant, but the new hand acts up, writing "kill" whenever Lindsey doesn't concentrate.
Split into simpler sentences: Hoping that his performance will pick up again with the return of his hand, his superiors arrange for him to receive a mystical transplant. But the new hand acts up, writing'kill' whenever Lindsey doesn't concentrate.