No, no we are not there yet.
A) Mike is a splintered self of PB (Sybill). PB lives, either M self is submerged or PB and M have merged and PB is the self. M could re-emerge if PB enters a stressful situation. Therefore PB not a murderer and well - is it really even a lie?
B) PB and M are both real. PB murdered M and ate big roast dinner to impress me.
C) PB and M are both real and both pretending that PB killed M. M lies in wait.