Gilded Latten Bones(2010)

Glen Cook

For Garrett, P.I., loyalty and love come a close second to survival...

Garrett's attempt at domestic bliss with the fiery Tinnie Tate is sidetracked when he waylays a pair of home intruders and learns they've been paid by an unknown source to kidnap Tinnie. But as Garrett rushes to find out who is trying to push his buttons, his best friend is attacked. Now, Garrett has to track down both malefactors.

Unless they're really one and the same-in which case Garrett might be next...