If he shared a cell with Ganz, that could explain the print.

如果他和甘斯是狱友，指纹就说得通了。

Inmate Willie Radkay, who shared a cell next to Machine Gun Kelly, is on record saying that the food at Alcatraz was better than any other prison he’d been at.

囚犯威利·拉德凯（Willie Radkay）与机枪凯利（Machine Gun Kelly）共用一间牢房， 他记录在案，称恶魔岛的食物比他去过的任何其他监狱都要好。