Marlowe as a Secret Agent?
The nature of Marlowe's service to England was not specified by the council, but the letter sent to Cambridge has provoked abundant speculation, notably the theory that Marlowe had become a secret agent working for Sir Francis Walsingham's intelligence service. No direct evidence supports this theory, but the council's letter clearly suggests that Marlowe was serving the government in some secret capacity.
Surviving Cambridge records from the period show that Marlowe had several lengthy absences from the university, much longer than allowed by the school's regulations. And extant dining room accounts indicate that he spent lavishly on food and drink while there, greater amounts than he could have afforded on his known scholarship income. Both of these could point to a secondary source of income, such as secret government work.
But with scant hard evidence and rampant speculation, the mystery surrounding Marlowe's service to the queen is likely to remain active. Spy or not, after attaining his master's degree, Marlowe moved to London and took up writing full-time.