London - Professional profilers analyzing serial monster Jimmy Savile's depraved 60-year rampage are asking the inevitable, 'just how really bad was this bastard?'
A confidential briefing this week will see sleuths from the Met's Serious & Organized Wackjobs Unit narrow down potential sites for a Cleveland-style abasement basement in a microscopic trawl of the ex-BBC man's haunts.
"It's just one possibility in the suspected missing jigsaw puzzle," a spokesman said, "we reckon its existence may be linked to Savile's personal Diamond Jubilee celebrations of his own evil career."
The unit has been following developments in the US kidnapping and forced decade-long imprisonment of local Cleveland, Ohio teens Amanda Berry, Gina DeJesus and Michelle Knight.
The case has eerie parallels with Austrian dungeon master Josef Fritzl whose own grotesque criminality raised the bar impossibly high with the 24-year incarceration of his own daughter in one of Europe's worst ever 'it-couldn't-happen-here' abductions.
Fritzl's case file was scrutinized by US litigators in the Dugard case who secured a 431 year jail term for convicted sex offender Phillip Craig Garrido.
The monster, along with his wife Rosemarie, kidnapped and kept Jaycee Lee Dugard a prisoner for 18 years in a maximum security basement dugout at their Amstetten, Austria home.
He's always denied being part of an international ring that receives its abduction and abuse instructions from a High Command Council linked to showbiz and money laundering despite some paper trail leads going back to the days of the Nazis.
The Yorkshire Ripper is 69.