talkaholic

Mr. Prince, though only in his late 20's at the time, has a haggard look, dark-ringed eyes and a nervous, frenetic manner. . . . With talkaholic flair, he describes injecting adrenaline into a companion who has overdosed, shooting a thief during a gas station holdup, and crying so noisily during a drug bust that three policemen wound up reassuring him.