By Popular Demand
Okay, here we go..
The Secret Letter is
LCategory 1: A Cable TV network
Category 2: The Latin Species name for a reptile, (with the English name in parens)
Category 3: An English Musical Act from the last thirty years
Category 4: Something you would use in baking
Category 5: A Saturday Morning Cartoon show
Category 6: A French actor, first or last name
Only one more round to go!!!