Chemistry Camp's MVP: Eric "The Inhaler" MarshFreak of the week returns for this episode with the introduction of Eric Marsh, played by Zachary Ty Bryan (Home Improvement, Tokyo Drift). Eric commits a LuthorCorp robbery that Clark happens to witness, which brings more trouble to the Kents and also lures Lionel back into town. Meanwhile, Chloe breaks off her friendship with Clark and Jennifer Smalls returns to make Lana's life even worse.