IT WAS A DARK AND FROGGY EVENING! Its time to cue the music; its time to dim the lights! Its time to get things started as the Muppets return tonight! The show is about to begin at the famous Muppet Theatre, and the regular pre-curtain chaos has the troupes stalwart MC, Kermit the Frog, coming apart at the seams. In an attempt to de-stress, he settles down to read a few pages of a favorite old detective novel only to get kayoed by an errant brick to the bean, leaving him laid out backstage as his co-stars try to coax him back to consciousness. But unbeknownst to them, Kermit has taken up the hard-boiled mantle of his fictional hero to walk the darkened streets of Dreamland, righting wrongs and cracking cases under the concealing cover of night. Flip Minnow, P.I., has no time for song and dance not if hes going to solve the baffling mystery of the Snoozing Sleuth! Legendary cartooning talent and Muppets comics veteran ROGER LANGRIDGE bellies up to t