Detroit is a large city in the United States.
Cheshire led a break-in on STAR Labs with Shade, Mist and Livewire. They escaped with a Reach device that was being experimented on, though Cheshire was shot in the arm by security guard Casey Klebba.
Before flying out, Cheshire had herself looked after by Doctor Moon. Nightwing's team intercepted them and apprehended Mist, Livewire and Doctor Moon, but Cheshire got away with help from Shade.