You get the residence location by finding his license in the glove compartment. His wife is there.

Last time spoke? 5, he was working late
Where work? Chief reserach at Avery labs
Late often? Yes, last few months - special projects. Gave him blinding migranes
Stress at work? Diana Quinn is his research assistant and would know
Midtown with $5k? No idea
How were things? Happily married 25 years, never would risk marriage. (she gets upset)

Psychiatrist - she is depressed about the death and infidelity.

Surveillance - she is making funeral arrangements

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