Complex sentence: After escorting Ray to bed, he had an altercation with Mary which lead to a kiss but prompting Mary to reveal her superpowers and throw him out of the house severely damaging the house and threatens to kill him if he tells Ray about it.
Split into simpler sentences: After escorting Ray to bed, he has an altercation with Mary which leads to a kiss but prompts Mary to reveal her own superpowers and throw him out of the house, severely damaging it. She threatens to kill him if he tells Ray about it.