While Shawn's at the hospital getting patched up, he and Gus check on Brendan. They notice he has a replacement inhaler. It's the identical type Jiri Prochazka, another speller, has. Only Gus informs Shawn, the doctor on Jiri's prescription does not exist. Jiri's inhaler is a fake. Shawn is now determined to finish the doghouse. He needs the results on those noodles.
Henry notices Shawn's been injured and helps him finish the doghouse. Turns out, Henry already had his friend analyze the Chinese food. It definitely was poison, a fact that Shawn takes to the cops in the form of a "vision." Unfortunately, they can't build a case off his vibes. Shawn and Gus are going to need actual proof.
Back at the Bee, Shawn poses as the new Spellmaster and he and Gus sneak back into the Spellmaster's box. There, Shawn notices distinctive indentations on the carpet. He finds a tripod in the closet with a camera attached, locked in an awkward position. The feet of the legs fit into the indentations perfectly. As Shawn moves the tripod around, he realizes Cavanaugh was spying on Jiri's father, Miklous. Cavanaugh must have suspected Miklous and Jiri of cheating and was going to disqualify the boy in his big announcement.
Back downstairs, Shawn watches Miklous as Jiri comes up to spell. He sees Miklous tapping something in his jacket and then Jiri gripping his inhaler. Shawn realizes Miklous rigged a system that sent electrical pulses to the inhaler to spell out the word for Jiri. Brendan accidentally got hold of that inhaler, and that's why it felt strange in his hands and didn't work when he needed it to. It was Miklous who poisoned Cavanaugh and ran Shawn off the road. Gus calls the police and Shawn has a grand psychic episode onstage, pointing to the inhaler as the definitive proof the cops were looking for.