The Greenhouse Pane!

When their toy poodle Bessie finds a famous architectural designer dead in the Myriad Hotel's greenhouse, Hector and Pamela Jackson's attendance at the rooftop gala make them witnesses to a crime scene.

With the elevators suddenly inoperable, our couple must determine which of the guests is the killer before the culprit escapes - or another guest ends up dead.
The fourth of The Myriad Mysteries - a mild, fun mystery series set in a fictional 1920's Chicago.
No graphic violence, sex, or foul language
No animals are harmed.
Nothing ugly.
The books are diverse in every way and friendly to all of good cheer.