Possible Clues:

• Unemotional and impassive
• 'Slow and dense', admits Tory leader
• Unemotional saint humming
• Slow and reliable taking time
• Calm, unanimated
• Almost discontinue cover, showing little emotion
• Not excitable, doesn't show emotion
• Unyielding, hiding innermost bit of emotion?
• Strongly built tenor inside lacking in emotion
• Almost carried out theft of identity without much emotion