A little more information but kind of a head scratcher:
Charles’ phone records reportedly show he arrived at the Spokane airport at about 12:40 a.m. Sept. 18. Both his and Theresa’s phone then appear to travel west on I-90 until both cellphones went offline just before 2 a.m. in the Sprague area, according to investigators.
At about 4:15 p.m. Sept. 18, Theresa’s phone is back online for one second and registers a location west of Harrington in Lincoln County.
Investigators also obtained Google search records for Charles’ phone that they say showed he searched for “lorazepam and alcohol” and “what is a lethal dose of lorazepam,” according to court records.
MOSES LAKE — Investigators say Charles Bergman, still unaccounted for, purchased a shovel on the same day he left to pick up his wife Theresa Bergman from the Spokane airport.
www.ifiberone.com
Was he searching on the drugs for himself or as a backup plan to murder Theresa? If for himself then I'd speculate that he planned to confront and murder the boyfriend in NY then off himself.