Valerie Harper & Dick Van Dyke are Signed, Sealed, Delivered for Hallmark TV Series

Broadway vets and screen icons Valerie Harper and Dick Van Dyke have both signed on to guest star in Hallmark’s Signed, Sealed, Delivered. According to Deadline, Harper will appear in the first two episodes and Van Dyke in episodes three and four.

The series follows a group of mail detectives in the Dead Letter Office, who deliver every dead and missing letter to its true owner just when the recipient needs it most. Both legends will appear in the revolving role of the team’s supervisor.

Best known for playing Rhoda Morgenstern Gerard on The Mary Tyler Moore Show and Rhoda, Harper, who has been battling inoperable brain cancer, recently appeared on Dancing With the Stars. A Tony nominee for Looped, her other Main Stem credits include Take Me Along, Wildcat, Subways Are For Sleeping, Something Different, Paul Sills’ Story Theatre, Ovid’s Metamorphoses and The Tale of the Allergist’s Wife. Mary Poppins and Chitty Chitty Bang Bang legend Van Dyke made his Broadway debut in 1959 in The Girls Against the Boys, before going onto appear in Bye Bye Birdie.