A Fall in Denver — Sarah Andrews

Cantankerous geologist Em Hansen is moving up in the world-- from a drilling rig in the Wyoming badlands to the posh twelfth floor of Denver's Cattlemen's Exchange Building. She's about to find out how dangerous a desk job can be.

On her very first day at Blackfeet Oil, Em encounters an accountant on the way down--sixteen stories to the sidewalk below. She senses there's some slippery business behind this suicide and a mysterious new oil field that none of her bosses want to talk about. A second death soon has her snooping into office politics from nine to five...and spending after hours investigating her own heart with a gorgeous engineer. But when some high society girlfriends from Em's past bring her into Denver's upper strata, this gritty cowgirl may be digging too deep into other people's secrets and hitting pay dirt: a killer out for blood, not oil, and this time it may be her own.