Mad Men

Mad Men, which returns later this year for its third season, is notoriously tight-lipped about its storylines.

Therefore, fans eat up any modicum of spoilers they can find. With that in mind, here's what we've learned about the season's fifth episode: it will be titled "The Fog," and the following casting notices have gone out to actors for it:

• A prison guard that his out of his element when away from his jail;
• A pair of advertising clients that hail from the Midwest;
• A no-nonsense nurse;
• A Grace Kelly-lookalike that is a suburban mom.

What impact will these roles have on season three storylines? We have no idea. But we'll be tuning in to Mad Men to find out!