Yes, Sir by Ki Brightly

River Demchenko, attorney for the Kings of Men MC, takes risks. He craves rough relationships and lives on the edge between acceptable and criminal. When Officer Paxton calls looking for an attorney after his husband mysteriously dies, River takes another questionable leap. Paxton is the only cop who has ever treated him with respect so helping to clear his name only seems fair. After all, everyone deserves a second chance, even a cop.

Officer and Private Investigator Jayce Paxton has his world ripped apart and becomes a widower. He throws himself into his work and is shocked when he stumbles on his lawyer, River, drugged and hurt. River is caught up in a blackmailing scheme, and he’s being threatened by the same people Jayce and his team are investigating as sex traffickers. In order to find the traffickers, Jayce needs to enter a seedy underworld River is all too familiar with. To make the act convincing, Jayce persuades River to pretend he’s his boyfriend—and let people think Jayce is his Dom.

One problem, Jayce likes his role too much.

They need to find the men extorting River before he winds up without a job, or worse. Despite their unexpected attraction, they have to keep their focus on solving the case, or more lives could be destroyed. River has been hurt before and isn’t sure he can deal with more than the sham relationship, but Jayce will give it his all to change River’s mind and keep him safe.