Keep Every Camera Rolling. Nightlock Sins, #22

The most dangerous form of devotion is documentation. June Halstead is a fearless documentary filmmaker who prefers to view the world through a lens. When she secures exclusive access to a clandestine underground boxing venue in Nevada, she thinks she's found the perfect gritty subject. But she doesn't know that Asa North, the dangerous and calculating operator of the Arcade, has been watching her for eight months.
He knows her coffee order. He knows her equipment. He redesigned his entire building just for her, wiring every room to accommodate her cameras-and his own. When a corrupt police detective executes a man inside the venue and triggers a total lockdown, June captures the cold-blooded murder on tape. Trapped behind impenetrable steel shutters with a killer on the loose, June and Asa are forced into a deadly game of survival.
Asa's obsessive, all-seeing surveillance might be the only thing keeping them alive, but as the walls close in, June realizes that the man protecting her is also her captor. Keep Every Camera Rolling is a gritty, claustrophobic dark romance where the line between watcher and watched disappears completely.