A Twisted Triangle

When Sylvia Perez wanted something, she got it.
When Lyle Fordham wanted something, he got it.
Sylvia Perez wanted Lyle Fordham.
Lyle Fordham wanted Allie Bainard, and not in a permanent way. He did not want Sylvia Perez.
Lt. John Vernon wanted to know who killed those three – and why.