NCIS Season 1 Episode 9

Sarah, the widow of marine Major Jim Kidwell who died two weeks earlier on a job with colleague Major Craig Peary too high classified even for Gibbs, keeps getting messages, allegedly from Jim. They were reported poisoned with formaldehyde in brothel drinks on foreign mission and buried, according to a bogus colonel. A tape proves Kidwell was alive during 'his funeral', and when the casket is dug up lies in it, well-embalmed, but apparently impossible to tell when or how he died, until Ducky figures out he was embalmed alive. A 'radar' scan proves Peary's casket contains something else, but no body. The case links to a CIA operation in Colombia...