Maggie Mars used to be a journalist on the East Coast, but now she's come to L.A. to make a name for herself as a screenwriter... and maybe live her fantasy of someday meeting Jack Nicholson. When Roger Urban, her long-time mentor and friend, is found dead--in a splashy red garter and bra--Maggie is determined to find his killer.   Helping Maggie are her legal eagle of a boyfriend and her batty father. Not to mention an L.A. cop who thinks Maggie just might identify the killer. Because of her curiosity and stubbornness--or because he is her ex-boyfriend? Maggie's always wanted to see her name in lights--and sometimes a girl gets what she wants. She might find out who killed Roger and become a hot news item.   As the next victim.