Terminally-ill cancer victim Valerie Harper is to team up with her Mary Tyler Moore Show castmates for what could be one last Tv hurrah.

The actress will reunite with Betty White, Cloris Leachman, Georgia Engel and Moore on an upcoming episode of U.S. comedy Hot in Cleveland.

Harper recently revealed she had been diagnosed with incurable brain cancer, and given just months to live.

The episode is scheduled to go before cameras next month (Apr13).