Thank you so much Bridget, for (hopefully) solving this puzzle:
"I’m trying to find 2 authors (series). First, an interior decorator, male, straight, who gets a female cop (or P.I.) to help him find the "bad guy". "
A. J. Orde (whose real name is Sheri S. Tepper) writes a series about Jason Lynx, who is an interior decorator/antiques dealer from Colorado whose girlfriend (Grace) is a police woman. Here are the series’ books in their correct order:
A Little Neighborhood Murder ’89
Death and the Dogwalker ’90
Death for Old Times’ Sake ’92
Looking for the Aardvark ’93 (the paperback was published as Dead on Sunday)
A Long Time Dead ’94
A Death of Innocents ’96
Dale, I hope that these are the series you were looking for. Isn’t it wonderful how the internet can get people together?