That Paul's own snapchat video of Rogan's dog that captured him, Maggie and Alex and nobody else is a key element that proves that he was there at the kennels right at the time of murders and will help convict him IMO, is divine intervention.
Alex brought down by Paul is justice for him and Maggie.
MOO
Yes
It is the smoking gun. Literally the killer on video. What more could you want.