Helen and Olga are kindly old ladies who open their hearts and wallets to down-and-out men in Los Angeles. In a city named for angels, the two women seem heaven-sent. After one of the men is killed by a hit-and-run driver -- and then another suffers the same fate -- investigators uncover a horrifying and twisted plot that stuns even the most seasoned detectives. All six episodes of this chilling podcast from Keith Morrison and Dateline are available now.

Helen and Olga are on a mission to help homeless men in Los Angeles, when tragedy strikes. Twice.

An insurance investigator’s hunch leads law enforcement to assign a task force to tail two little old ladies.

The Granny Task Force conducts simultaneous early-morning raids at the homes of Helen and Olga.

Detectives leave Helen and Olga alone together in a room wired for sound. Old resentments boil over.

The investigation goes into high gear with the discovery of the murder weapon.

Fireworks and finger pointing in court as two little old ladies do whatever it takes to beat a murder rap.