Guest Star Guide: Bree Williamson, Ted King, Josh Duhon, Brooklyn Rae Silzer, Heather Tom, Tom Pelphrey

One Life to Live alum Bree Williamson visits Castle on April 18.

Daytime stars and alums are primetime, on talk shows, and in made-for-TV movies.

Check out our updated Guest Star Guide below to find out where your current or former favorites may be appearing soon.

Monday, April 11
* The View (11 a.m. ET/10 a.m. PT on ABC) - Christopher Walker (ex-Mike Bauer, Guiding Light) visits.

Tuesday, April 12
* iZombie (8 p.m. ET/PT on The CW) - Steven Weber (ex-Kevin Gibson, As the World Turns) recurs as Vaughn Du Clark. Back-to-back episodes.

Wednesday, April 13
* Criminal Minds (9 p.m. ET/PT on CBS) - Sheryl Lee Ralph (ex-Laura McCarthy, Search for Tomorrow) plays Hayden Montgomery.

Thursday, April 14
* Rush Hour (10 p.m. ET/PT on CBS) - Doug Savant (ex-Matt Fielding, Melrose Place) plays D.A. Ginardi.

Friday, April 15
* Hawaii Five-0 (9 p.m. ET/PT on CBS) - Ted King (ex-Lorenzo Alcazar, General Hospital) plays Clark Brighton.

Saturday, April 16
* Dying to be Loved movie premiere (8 p.m. ET/PT on Lifetime) - Lindsay Hartley (ex-Theresa Lopez-Fitzgerald, Passions) stars as Jill Yates.

Sunday, April 17
* The Family (9 p.m. ET/PT on ABC) - Grant Show (ex-Rick Hyde, Ryan's Hope) recurs as Governor Charlie Lang.
* Crowded (9 p.m. ET/PT on NBC) - Betty White (ex-Ann Douglass, The Bold and the Beautiful) guest stars.
* Quantico (10 p.m. ET/PT on ABC) - Marcia Cross (ex-Kate Sanders, One Life to Live) returns as Claire Haas.

Monday, April 18
* Gotham (8 p.m. ET/PT on FOX) - Tonya Pinkins (ex-Livia Frye, All My Children) returns as Ms. Ethel Peabody.
* Castle (10 p.m. ET/PT on ABC) - Bree Williamson (ex-Jessica Buchanan, One Life to Live) plays Karla.

Wednesday, April 20
* Criminal Minds (9 p.m. ET/PT on CBS) - Frances Fisher (ex-Deborah Saxon, The Edge of Night) plays Antonia Slade.

Thursday, April 21
* The Odd Couple (8:30 p.m. ET/PT on CBS) - Teri Hatcher (ex-Angelica Stimac Clegg, Capitol) plays Charlotte. In the episode, Oscar (Matthew Perry) faces a personal dilemma when he dates a young nanny, Allyson (Brianne Howey), who works for his neighbor, Charlotte.
* Bones (8 p.m. ET/PT on FOX) - Ignacio Serricchio (ex-Alex Chavez, The Young and the Restless) returns as Rodolfo Fuentes.

Friday, April 22
* Grimm (9 p.m. ET/PT on NBC) - Sharon Leal (ex-Dahlia Crede, Guiding Light) plays Zuri Ellis.

Sunday, April 24
* The Family (9 p.m. ET/PT on ABC) - Grant Show (ex-Rick Hyde, Ryan's Hope) recurs as Governor Charlie Lang.
* Quantico (10 p.m. ET/PT on ABC) - Lenny Platt (ex-Nate Salinger, One Life to Live) returns as Drew Perale.

Monday, April 25
* Lucifer (9 p.m. ET/PT on CBS) - Heather Tom (Katie Logan Spencer, The Bold and the Beautiful) returns as Mel Graham.
* NCIS: Los Angeles (10 p.m. ET/PT on CBS) - Josh Duhon (ex-Logan Hayes, General Hospital) plays Darren Lee.
* Castle (10 p.m. ET/PT on ABC) - Maurice Benard (Sonny Corinthos, General Hospital) plays Horatio Spate.

Wednesday, April 27
* Criminal Minds: Beyond Borders (10 p.m. ET/PT on CBS) - Brooklyn Rae Sizler (Emma Drake, General Hospital) plays Megan Wolf.

Friday, April 29
* Grimm (9 p.m. ET/PT on NBC) - Sharon Leal (ex-Dahlia Crede, Guiding Light) returns as Zuri Ellis.

Wednesday, May 4
* Law & Order: Special Victims Unit (9 p.m. ET/PT on NBC) - Tom Pelphrey (ex-Jonathan Randall, Guiding Light) guest stars.

Friday, May 6
* Grimm (9 p.m. ET/PT on NBC) - Sharon Leal (ex-Dahlia Crede, Guiding Light) returns as Zuri Ellis.