The River Run Centre kicks off its 15th anniversary season with a children’s theatre show recommended for ages three and up on the main stage on Sunday Oct. 14. The 2 p.m. performance of The Three Musketeers by DuffleBag Theatre will be interactive, with audience members invited on stage to be part of the action, a news release said.  The play is described as a classic tale of friendship, intrigue, and swashbuckling adventure. DuffleBag Theatre, created in 1992, stages numerous shows each year in Canada, the United States and around the world. Tickets are available at the River Run Box Office, 519-763-3000, or online at riverrun.ca.