Four of Dressler''s old gangster colleagues have put together a national tour of once-popular rock bands they own a piece of: three nights of concerts by guys (and a few gals) who were big shots back in the 1960s and 1970s, and who are now hoping at one more gasp of glory with this nostalgia exhibition. The Rock of Ages tour has proved itself to be anything but a love fest. There have been two near-fatal accidents that might have been attempted murders and Junior has one weekend to figure out who''s to blame.