The Mentalist Season 5 Episode 2 (10/07/12)
-Victor Mendelsohn, a diamond cutter is found stabbed to death with his own electric saw.
-When Jane drinks tea from the victim's kitchen he suffers severe hallucinations and sees his deceased daughter. She tells him his quest for Red John isn't helping her. She'd dead.
-Victor's diamonds are found in his assistant's bag but Jane believes he was set up. He and Lisbon work through the clues of his hallucination.
-Jane realized that the neighbor, Betty lied. She could see into Victor's kitchen.
-Betty drugged Victor's tea and stole his diamonds, then made him saw into himself in his drugged state.
-When the hallucination of Charlotte disappears, we see Jane making himself more tea.