Me. Rev. Stat. tit. 36, § 1080

If the real estate is not redeemed within the time specified by payment of the full amount required by this chapter, the municipal treasurer shall deliver to the purchaser the deed lodged with the treasurer by the tax collector. If the treasurer willfully refuses to deliver such deed to the purchaser, on demand, 2 years after the sale and forfeiture of the real estate, the treasurer forfeits to the purchaser the full value of the real estate to be conveyed, to be recovered in a civil action, with costs and interest as in other cases. The sureties of the treasurer shall make good the payment required in default of payment by the principal. On the failure of both, the municipality is liable.