在这部用固定电话的侦探犯罪片中,已经退休的James "Jimmy" Furuta度假归来，打算要好好整理过去30年的家庭照片。一张1982年的旧宝丽来相片拍到了他卖给John的车，拍摄时间就在John的妻子Sarah被谋杀的那一天傍晚。而John此前宣称自己Sarah被害其间离家去Makapuu钓鱼。心存怀疑的Jimmy开始用固定电话联系事件相关的人了解情况...
The only thing special on this particular Monday for retiree, James "Jimmy" Furuta, is that he intends to organize the family photos of the past 30 years into neatly categorized albums. But when he uncovers a dated Polaroid shot back in 1982 of a car he once owned, his world is turned upside down. For he had sold that care to his brother-in-law and it proves he was not where he said he had been on the night before he found his wife, Jimmy's sister-in-law, murdered when he returned from a fishing trip. To get to the bottom of this mystery he begins to make phone calls to people associated with that tragedy and by day's end he will find the killer of a cold case that had been unsolved for 35 years. A story driven primarily by the phone call conversations of our hero to other characters appearing only in voiceover dialogue, "The Landline Detective" is an action packed murder mystery featuring only one on-screen character.
