Laine Confidently proclaims that the body in the oven went in around 2:00 am based on core body temperature. A body in a pizza oven long enough to burn it the way that body was burned would make it impossible to determine anything from core temperature. The heat from the oven would heat the core so that all record of normal heat loss after death would be impossible.
The "Sam" from Casablanca is a peripheral character and has no last name. Although Humphrey Bogart stars in Casablanca, his name is Rick; he did play Sam Spade in The Maltese Falcon.