COURTHOUSE - it is still a puzzle who shot and snuffed out a Philadelphia dentist in his Mercedes on an isolated road in Gladwyne more than 10 years ago. Fallon recounted Grosse was well known in the gay community, knew many of us and led a "terribly compartmentalized life.". Grosse performed cosmetic dentistry ; had an angry patient done him in? This line of thought also led investigators nowhere. On the yesterday evening of his life, the dentist likely picked somebody up in his auto and the passenger got in the back seat, the previous DA believes. An confederate could have followed the Mercedes ; after Grosse was shot in the back of the head, the 
shooter might have made his escape in the other car.
But maybe there had been another delinquent debt that hadn't been on the ledger, and somebody employed a killer to shoot Grosse, authorities speculate.
