Complex sentence: Brewster eludes the police with the apparent help of Louise but he eventually drives her away--and dooms himself--when he ignores her advice about sex by hooking up with Astrodome usher Suzanne (Shelley Duvall).
Split into simpler sentences: Brewster eludes the police with the apparent help of Louise. However, he eventually drives her away--and dooms himself--when he defies Louise's edict against sex by hooking up with Astrodome usher Suzanne (Shelley Duvall).