He was also searching for murder photos, decapitating pictures. This guy could be on to something serious.
Ugh no. Maybe he's just turned on by that stuff and would never actually even harm his wife. It's imposible to know why he (or maybe even she!) was searching for that and the police/other government services would be flooded with crap if they started monitoring net searches.
Not serious I think. Someone could write a report for college/uni etc., or maybe someone wants to make a website because he/she thinks it may attrackt many visitors.