Mortimer Mountain Ghost Gang the Midas Touch

We have the Drake teens 9 months later when school ends, and are invited to visit Uncle Terry, Aunt Cheri and cousins in Old Greenwich, Connecticut on Long Island Sound..  Draco and Marco are now 16, Peter 14. The twins had a final growth spurt and now match Peter in height. Celine, 18, plans on attending college in New York City. Kerry and Derry now 14, and Martha 17.  Ben, now 17, and a student of Old Greenwich academy in the last 9 months, maintained a long-distance relationship with Celine.
The Winter break he went back to the West coast to visit, Spring break Celine went to visit the East coast at Uncle Terry's manor.  Now a whole summer later break we find the Mortimer Mountain Ghost Gang on the East coast in Connecticut, where Celine plans to stay with Uncle Terry to go to college in New York City.  The teens have a new adventure, boating around Long Island Sound.  Uncle Terry has acquired a new summer place at Old Field Point across the Long Island Sound on Long Island, New York, where a new mystery is to be solved.  There is a mystery, at an old mansion, crooks of course, maybe some real ghosts this time.  We find our teens up to their necks literally solving the mystery by summers end.