Possible Clues:

• Drowsy
• Sloth, lust, envy, anger haunting all those heartlessly criminal?
• Large old English character, a king grossly discontented, showing torpor
• Good to be in Harley Street, finally treated for condition
• No enthusiasm to permit hospital to contact Doctor Gray
• Lassitude, tiredness
• Greatly troubled about horse's slowness
• Shows no enthusiasm for temporary accommodation at hotel for awkward Gary
• Extreme lack of energy, listlessness