I dvr'd an episode a week back. there was a family. a mother, 22 year old son and 8 year old daughter. they lived in an apartment complex. the complex was set on fire by an arsonist. all 3 people passed away.

They thought it had something to do with a note left at the mothers job (bank) where some one demanded money from the bank. I got up to the part where they updated it and said two local boys set the fire (aged 13 and 14) but I missed the rest and was wondering if they said why the boys did it or provoked them?