The Black Widower
- Episode aired May 25, 2007
![The Investigators (2000)](https://m.media-amazon.com/images/M/MV5BM2I0MGNiOTUtMzg3NC00OWQwLTg4MTEtMzE1MTU1MjhlNzAxXkEyXkFqcGdeQXVyNTM3MDMyMDQ@._V1_QL75_UY281_CR93,0,190,281_.jpg)
The case of 60-year-old Robert Merlin Spangler, who was suspected of murdering his wife, Donna R. Sundling Spangler, during a backpacking trip at the Grand Canyon in 1993.The case of 60-year-old Robert Merlin Spangler, who was suspected of murdering his wife, Donna R. Sundling Spangler, during a backpacking trip at the Grand Canyon in 1993.The case of 60-year-old Robert Merlin Spangler, who was suspected of murdering his wife, Donna R. Sundling Spangler, during a backpacking trip at the Grand Canyon in 1993.