Four years after Kim Calo fatally overdosed on coke during a hotel tryst with a woman and a Long Island banana mogul, her family is taking justice into its own hands.

The sister of Calo, who died at age 41 in the Kitano Hotel on Park Avenue, is fed up with the slow federal investigation of the incident.

Carol Sayre has restarted a wrongful-death lawsuit in Manhattan Supreme Court that was put on hold.