Batten down the hatches! Frasier's redoubtable ex-wife, Lilith (Bebe Neuwirth), is back! This time around, Lilith has joined forces with Frasier (Kelsey Grammer) in a concerted effort to enroll their son, Frederick (played for the first time by Trevor Einhorn), in Marbury Academy, an exclusive Boston prep school. So determined is the couple to achieve this goal that they have put their Thanksgiving plans "on hold" -- maybe until next year! Paxton Whitehead guest stars as the stuffy headmaster of Marbury, whose interview with Frasier yields surprising results...twice.