The Body in the Backyard by Lucy Score

Her self-absorbed news anchor ex-husband careening back into her life was not on this amateur psychic detective’s bingo card.
Not only does Griffin Gentry show up unexpectedly at Riley Thorn’s door—the real shock is that he’s begging her for help. Riley’s hot private investigator boyfriend Nick Santiago refusing to take the job is…well, less of a surprise.
Too bad for Nick that his octogenarian business partner overrules him and takes the lead on Griffin’s case. But when a dead body makes it clear someone really is out to get Riley’s ex, the mile-long suspect list means all hands on deck at Santiago Investigations. Even the wrinkly, retired ones.
It’s only a matter of time before Griffin brings the danger directly to their doorstep. And with Riley and Nick busy interviewing suspects, that leaves their elderly roommates to wreak havoc in the surveillance department. Can Riley block out the chaos to focus her psychic visions long enough to narrow down the list of suspects? Or will Griffin Gentry’s bad karma be the downfall of them all?