The Castaway star took to on Tuesday (06Oct15) and shared the photo of 'Lauren' - and appealed for her to get in touch.

"Lauren!," he tweeted alongside the snap. "I found your Student ID in the park. If you still need it my office will get to you (sic)."

The good deed is proof that karma exists - Tom previously benefited from the kindness of strangers after an honest New Yorker picked up his lost credit card and managed to get it back to the actor in March (15).

At the time, he expressed his gratitude online, writing, "A guy named Tony found my credit card on the street in NYC and returned it! Tony! You make this city even greater! Thanx (sic)".