10/06/2008 at 01:00 AM EDT
• Love and conflict spread like the flu on the ABC hit, back Oct. 1.
(Dr. Addison Montgomery) promises a jolt "of drama and humor" on the Grey's Anatomy
Now just friends with Dr. Wilder (Tim Daly), Addison moves on to Officer Nelson (David Sutcliffe). And expect more sparks from the docs played by Paul Adelstein and KaDee Strickland.
For those who felt last season lacked the pulse of Grey's
, "it's more medical," says Walsh, "more conflict."