Debt
From Tardis Wiki, the free Doctor Who reference
Dorium Maldovar observed that there were people all over the galaxy that owed the Doctor a debt. In anticipation of the Battle of Demons Run, Dorium suggested to Madame Kovarian and Colonel Manton that the Eleventh Doctor was collecting on his debts, adding "God help you, and God help his debtors." (TV: A Good Man Goes to War)
