Man, if I hadn't already sold to Intrigue, I would so be doing this!
Go to the E-Harlequin's community boards and select The Write Stuff. Inside there is a thread titled: Enter our INTRIGUE PITCH CHALLENGE. Go there for all the information.
Editor Allison Lyons will be listening to pitches for your completed manuscripts targeted to Harlequin Intrigue. This is a good opportunity to get your pitch in front of an editor who can request—and buy—your manuscript.
If nothing else, it's good pitching practice!