It's Monday afternoon, October 16th, 1967.
A pair of part-time employees at Jack and Felicia's Cafe on Millbury Street are walking through the front door of the restaurant.
They're stopped dead in their tracks as soon as the door swings open.
There, lying dead on the floor of the bar, is owner John "Jack" Zuromski.
A pool of blood has collected around John's head.
A sledgehammer is on the ground next to him.