Like most skilled trial lawyers, Houston’s Mark Lanier knows how to put on a show in the courtroom. Now he has done it for real — or as real as it gets on the silver screen — playing a lawyer named Mark Lanier in a feature film loosely based on one of his cases.

Lanier has a three-scene role in “Puncture,” which had its premiere April 21 at the Tribeca Film Festival in New York City. “Puncture” is the story of antitrust litigation filed over hospital purchasing of syringes designed to protect health care workers from getting pricked by needles.