As Cypher I need some help, her power of retro cognition allows her to see into the past and now that she's near the center at ground Zero she should be getting good impression as to what happened
Not asking for a blow by blow an the images can be disconnected but some clues would be helpful

Oh an while she's on a roof safe from the zombies she'd be devoting her entire attention to gazing into the past, I.E. The best chance to catch Cypher
She's dressed head to toe in form fitting Black clothing her head covered in a black hood with mask leaving only her eyes visible. ( like a Cat Burglar)