Possible Clues:

• Gouzenko or Stravinsky
• Music's Stravinsky
• Inventory Sikorsky
• He had a hunch about the lab
• Operatic prince to leave in unending anger
• Horror-film assistant
• Aircraft pioneer Sikorsky
• Role in 'Young Frankenstein'
• Dr. Frankenstein's gofer
• Transylvanian lab assistant