Vishwaroopam (movie, 2013)

Vishwanathan, a Kathak dance teacher in New York, is in a rather happy marriage with Nirupama who is a nuclear oncologist. Nirupama is from a middle class family in Chennai, she marries Vishwanath (a dance master) to pursue her higher studies in the USA. But when Nirupama wants to break up with her husband, she engages a private detective. That's when the pandora's box opens up.