the detective hoped russel douglas' widow brenna douglas might shed some light on that, but that nighthad her two children had been murdered the detective says he got a strange feeling. >> i never tried to judge how people are going react when i tell them thing, but her response wasn't what i expected. >> as in not emotional enough? >> she wasn't shocked, at least not visually shocked. it was a bit matter of fact and that did leave us at least wondering when we walked out of the house. yes. >> and so brenna douglas, as the wives of murdered men often do, became a person of interest, the domestic situation seemed unsettled. >> they were separated. russel was living in an apartment in renton. according to brenna they were trying to work it out and talking about getting back together. >> in fact, the new widow told the detectives that her husband had spent the holidays with her and the kids. >> she said the last time she saw him was the morning of december 26th. he left the house somewhere mid-morning and she thought he was going to run some errands. >> brenna douglas have an alibi? >> sh