I think we're looking at someone else out there who can kill or place hits. If we look at the nightfall sequence of events... there were 3 assassinations/hits attempted last night. Two were successful, but one failed. Why? Because Phoenix was a KGB Assassin... she was the first to die, so her hit could not be completed.
Nightfall Sequence of Events
1. Night falls.
2. Town Lynch - Phoenix KGB Assassin.
3. Exorcism - DD attempt on me/failed. DD's powers lost.
4. Unknown Hit - JohnLarson dead, KGB Interrogator.
5. Unknown Hit - Jpapy dead, Town Mayor (wore ring of the dead).
6. Daylight starts with delivery of newspaper.
At first I thought there must be two more KGB assassins out there in addition to Phoenix. As an assassin, Phoenix would have had submitted her hit by PM before nightfall. But once she got killed, whatever hit she'd placed would no longer go through. It's not like she'd planted a car bomb that was set to detonate after she died. In both cases (JL and Jpap), two people who are still alive trailed them both in the dark, killing them directly after Phoenix was already dead.