There are roughly 100 brains missing from the collection of the University of Texas at Austin, meaning that about half of the total collection is simply gone. The University had received the bulk of its collection of brains stored in formaldehyde in 1986, a donation from the Austin State Hospital (which was formerly the Texas State Lunatic Asylum).
One of the missing brains is believed to have belonged to Charles Whitman, the clocktower sniper who killed 16 people before being fatally shot by police in 1966.
Some staff members believe that the brains may have been removed from their storage location as a prank, but I have compiled a list of likely suspects below. I urge the police to follow up on every lead.