 The three @-@ storey museum displays information and memorabilia of the prisoners and staff , including death masks of the executed criminals . At one time the museum displayed Ned Kelly 's skull , before it was stolen in 1978 ; as well as the pencil used by wrongly convicted Colin Campbell Ross to protest his innocence in writing , before being executed . Paranormal enthusiasts claim the museum is haunted , with claims of ghostly apparitions and unexplained voices near cells . 
