. >> my name is marty dolan. for decades, a few boxes collected dust in my mother's attic. of the most sensational crime stories of the 20th century. >> i meet marty, a 70-year-old retired anesthesiologist. hi, marty. i'm jamie colby. >> welcome to my home. >> he tells me this true detective story begins in 1960, when marty's great-uncle, mike malone, a longtime irs employee, passes away. marty's grandmother, molly, heads to st. paul, minnesota, to collect her brother's personal effects. it's there she makes a bizarre find under the pillow -- a gun. >> no serial numbers on the gun. they were etched out. >> why would he, as a government employee, have a gun with no serial number? >> that's a good question. i don't know. >> molly also inherits a pair of handcuffs and several boxes of official-looking papers. it all winds up in the crawlspace of the family home in new jersey. >> and no one really took it upon themselves to dig into these. >> when molly dies, in 1977, marty's mother, dolly, inherits the boxes, and they continue to collect dust in an attic. >> my parents's gener

. >> my name is marty dolan. for decades, a few boxes collected dust in my mother's attic.n i opened them, i discovered my family's link to some of the most sensational crime stories of the 20th century. >> i meet marty, a 70-year-old retired anesthesiologist. hi, marty. i'm jamie colby. >> welcome to my home. >> he tells me this true detective story begins in 1960, when marty's great-uncle, mike malone, a longtime irs employee, passes away. marty's grandmother, molly, heads to st. paul, minnesota, to collect her brother's personal effects. it's there she makes a bizarre find under the pillow -- a gun. >> no serial numbers on the gun. they were etched out. >> why would he, as a government employee, have a gun with no serial number? >> that's a good question. i don't know. >> molly also inherits a pair of handcuffs and several boxes of official-looking papers. it all winds up in the crawlspace of the family home in new jersey. >> and no one really took it upon themselves to dig into these. >> when molly dies, in 1977, marty's mother, dolly, inherits the boxes, and they conti