Complex sentence: Slim's friends, waiting outside the house, heard the struggle and break in, then Mitch threatens them with a gun, before Phil (Christopher Maher) picks up Gracie to use as a witness while exhorting her to look at her father.
Split into simpler sentences: Slim's friends, waiting outside the house, hear the struggle and break in. Then Mitch threatens them with a gun, before Phil (Christopher Maher) picks up Gracie to use as a witness while exhorting her to look at her father.