Complex sentence: At the river the next day, Brent and Pam leave to have sex, however he leaves Pam in the woods after she declines and is murdered with garden shears by an unseen killer.
Split into simpler sentences: At the river the next day, Brent and Pam leave to have sex. They argue, however, and he leaves Pam in the woods where she is murdered with garden shears by an unseen killer.