A mysterious hound has just killed the Baskerville heir, and now the last remaining male Baskerville seeks out the assistance of the famed detective Sherlock Holmes and his loyal companion Watson. Each theatre-hike presents a different scene at a new location on the Arboretum grounds. Audience members hike to each location to enjoy the unfolding story. Low-impact hikes (suitable for strollers, walkers and wheelchairs) are on the first Sunday performance of the month. Runs Saturdays and Sundays in July.

The new Railway Garden, a G-gauge model railway running through a 2.5 acre site, opens April 30. Visitors enter through a 1920s-era railway depot to see trains running through a garden of miniature plants, water features and a variety of landscapes. May 1 through October.

Walk along a winding trail and view gigantic animatronic bugs, plus more than 150 stationary insects, which will be part of six themed scenes. Guests can also see live creepy crawlies in Harry's Big Adventure: My Bug World! The interactive habitats feature several ecosystems to show how insects impact their surroundings, the environment, and human lives. Activities, including bug cooking demonstrations, cockroach races, a spider web climber, and other bug-themed entertainment is planned for guests throughout the summer.

Exhibit examines the ancestry and evolution of numerous species, ranging from huge to tiny, from speedy to sloth-like, and displays animals with oversized claws, fangs, snouts, and horns. Highlights include taxidermy specimens, an entire skeleton of a giant hoofed plant-eater, a life-size model of the largest land mammal that ever lived, one of the oldest fossilized bats ever found, and an impressive diorama featuring the swamps and forests of an island in the Arctic. Runs May 26, 2012-Jan. 6, 2013.

In a fanciful and far-off kingdom, the vengeful sorceress Magenta places a wicked curse on the beautiful Princess Amber. Only a kiss from her one true love can unlock the spell and wake this Sleeping Beauty before it is too late. Will Prince Hunter overcome his fears as he scales the mountains, sails the dark sea and battles a dragon to prove his love to Princess Amber?

Comedy revue, written and performed by an ensemble of youths 9-15. The result is a Second City style show, with sketches commenting on anything from pop culture, to school, to families, and anything in between.