David Petr, as Tom Sawyer, left, and Jacob Leet as Huckleberry Finn, rehearse for a stage adaptation of the classic Mark Twain novel The

“There’s a little Tom Sawyer in all of us,” says Sally Spurgeon. Spurgeon is one of many child actors starring in a stage adaptation of the classic Mark Twain novel “The Adventures of Tom Sawyer,” which opens at 7 p.m. today at the Lawrence Arts Center, 940 N.H., and continues with shows at 7 p.m. Saturday and 2 p.m. Sunday. In this week’s Pulse Podcast, some of those actors, as well as director Ric Averill, talk about what makes “The Adventures of Tom Sawyer” such a universal story. (Hint: We all might have a bit of his mischief inside us.)