Ignore the crime line concentrate on the personality clashes.
This episode is more about the problems that Brennan and Booth are having in their relationship than about solving the murder.Because their beliefs are at variance they seem to be arguing all the time. Booth is such a religious person and Brennan is an agnostic - one who believes that we know nothing beyond material phenomena. She is forever sniping at his beliefs both in God and in the ways of his Roman Catholicchurch. This drives them to seeing Dr Wyatt together.
Wyatt reckons that their difficulties lie not with believing that she didn't go with Sully because of Booth but in another direction. We know better, so does Angela.
Angela and Hodgins also are having problems - except in the Egyptian storeroom at lunchtime!! Only Zack and Cam seem to be problem free.
Oh, they also manage to track down the murderer!