Castle

On an upcoming episode of Castle, the ABC hit will wink at Nathan Fillion's stint on One Life to Live and set an episode within the soap opera universe.

Appropriately, a handful of real-life daytime stars will make an appearance on the installment, which airs this spring. They include:

• Cameron Mathison (pictured, All My Children)
• Rebecca Budig (pictured, All My Children)
• Corbin Bernsen (The Young and the Restless)
• Jane Seymour

The episode will center on the fictional soap opera Temptations and a dangerous blogger who is unhappy with its storylines.