There is a fireman, a psychologist, a doctor, and a janitor outside of the jail cells. You need to cause something in the jail cell that makes that makes that type of person need to investigate.

• For the doctor: Disease (drop it onto the prisoner)
• For the psychologist: Insane potion (give it to the prisoner)
• For the janitor: Trash (put it in the cell)
• For the fireman: Fire (put it in the cell)