The mark of a great actor is when the audience forgets they're watching a performance, but we doubt Legends of Tomorrow star Dominic Purcell ever expected a fan to call 911 on him.

"I was doing Prison Break," Purcell tells TVGuide.com. "I was in a CVS and this lady called the cops thinking I was actually escaped from prison."

As for what happened once the cops arrived: "They just laughed," Purcell says.

You haven't seen the last of Hawkman on Legends of Tomorrow

See Purcell's Legends co-stars Caity Lotz, Arthur Darvil, Brandon Routh, Wentworth Miller and Victor Garber share their most memorable fan encounters and more in the video above.

Legends of Tomorrow airs Thursdays at 8/7c on The CW.

(Full Disclosure: TVGuide.com is owned by CBS, one of The CW's parent companies.)