Mallory Beck finds herself drawn into a secret cold case when her detective boyfriend's investigation becomes too intriguing to ignore. Mallory, eager to focus on her new catering business, is sidelined by her boyfriend Alex's secretive work on a high-profile cold case. When she accidentally glimpses crucial clues, she realizes the case's gravity and why Alex has kept it hidden. Despite knowing she shouldn't interfere, Mallory feels compelled to investigate, especially when she suspects she possesses vital information that could crack the case wide open.

The premise suggests a cozy mystery with a blend of amateur sleuthing and a touch of romance, likely featuring a lighthearted tone despite the 'murder' aspect. The inclusion of a cat with a 'hunch' points towards a quirky, character-driven narrative common in the cozy subgenre. Readers can expect a plot driven by Mallory's curiosity and her unique perspective, potentially uncovering secrets that even the police might overlook. The narrative framework appears to be third-person, focusing on Mallory's experiences and discoveries as she navigates the complexities of Alex's secret investigation.