The professor’s motive was in the grand scheme of things terribly petty ” Greenwood said. “"Pilate’s Cross" is inspired by the questions this terrible crime created but as a work of fiction it is set in a different place and time and has a more complex motive for the murders.
When you’re poor and hungry and frightened of failure, you often don’t have the luxury of high values, lofty goals, and social conscience. Funny how fear and poverty will acid-wash your value set, burn away all the flimflam and artifice and learned morality and leave you with nothing but the urgency of survival. - Dr. Dan Trix - Chasing the Horizon.