Mysteries of Laura Tonight: “The Mystery of the Unknown Caller”

“The Mystery of the Unknown Caller” is the title of the new episode of The Mysteries of Laura airing tonight (February 24) at 8PM on NBC.

Here’s how NBC describes the episode, which guest stars Disney star Debby Ryan:

Laura (Debra Messing) must stay one step ahead of a Brooklyn detective’s (guest star Tate Donovan) murder investigation when a phone call uncovers the prime suspect – Laura’s sister (guest star Debby Ryan).

You can find some preview images below.

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THE MYSTERIES OF LAURA -- "The Mystery of the Unknown Caller" Episode 215 -- Pictured: (l-r) Debby Ryan as Lucy, Debra Messing as Laura Diamond -- (Photo by: Barbara Nitke/NBC)

The Mysteries of Laura stars Debra Messing, Josh Lucas, Laz Alonso, Janina Gavankar, Max Jenkins and Callie Thorne. Also  guest starring in “The Mystery of the Unknown Caller” are Robert Klein and Louis Ozawa Changchien.