However , Dr. Campbell learns of this when Pat accidentally gives Bob an overdose and confiscates the drug .
Pat surreptitiously puts the elixir into Bob 's tea , causing him to be calmer and less cruel .
Dr. Campbell learns of this when Pat accidentally gives Bob an overdose and confiscates the drug .
Pat surreptitiously puts the elixir into Bob 's tea , causing him to be calmer and less cruel .