The Last Billable Hour is the only (so far) title by Susan Wolfe. (Her Amazon author page mentions she has a new title coming out in October.) Per
SYKM, it won the 1990 Edgar Award for Best First Novel and was a finalist for a couple of other awards. It's a US Kindle Countdown deal at $0.99 for about four more days.
link:
https://www.amazon.com/Last-Billable.../dp/B01GEXIGXO