Katie Holmes chased around her Mania Days costar Luke Kirby while filming a scene in NYC yesterday. On Tuesday, the pair braved the sweltering heat to shoot on the street, including a scene which involved Katie supplying Luke with pills from a prescription bottle. The scene isn't that strange as the movie centers on the story of two manic-depressive patients who fall in love after meeting in a psychiatric ward. Katie's been balancing her time between work and spending her Summer days with her daughter, Suri Cruise. The mother-daughter duo have been hitting the pavement around the Big Apple for activities together, and last week, Katie and Suri made a hand-in-hand stop at Chelsea Piers for a playdate.