General Hospital Spoilers: A Mysterious Witness to Cates' Murder Could Embarrass Sonny

General Hospital spoilers make everyone curious: Everyone is wondering if anyone witnessed the murder of FBI agent John “Jagger” Cates (Adam Harrington) on the boathouse deck of the Q-Villa.

Surprisingly, no one has come forward yet, but that doesn't necessarily mean no one saw what happened now, right? Could it be that someone is waiting in the wings, ready to report what they saw at just the right time – after Sonny Corinthos (Maurice Benard) and Carly Spencer (Laura Wright) both lied to the police?

If so, we can get a rough idea of ​​who it might be that had a front-row seat to Sonny killing Cates, but will he tell on it – or will he use his knowledge to get what he wants?

General Hospital Spoiler – Tracy seems pretty confident

Tracy Quartermaine (Jane Elliott) just can't keep her mouth shut when she talks about how sure she is that Sonny killed Cates.