Frank Mitchell was sprung from Dartmoor Prison by the Krays 10 days before Christmas 1966. Whilst a national manhunt ensued, he was holed up in a flat in East London with a minder and hostes... Read allFrank Mitchell was sprung from Dartmoor Prison by the Krays 10 days before Christmas 1966. Whilst a national manhunt ensued, he was holed up in a flat in East London with a minder and hostess for company.Frank Mitchell was sprung from Dartmoor Prison by the Krays 10 days before Christmas 1966. Whilst a national manhunt ensued, he was holed up in a flat in East London with a minder and hostess for company.