The Wednesday 8pm procedural, which stars Messing (Will and Grace) as a NYPD homicide detective balancing work and a difficult home life, will go to a full 22 episodes.
This comes after CBS gave full season orders to four new season dramas yesterday.
Ratings for Laura have been solid for NBC, drawing in an average 1.8 rating and a 6 share of 18-49s. Current ratings from Nielsen show it has averaged 10.4 million viewers through its first six telecasts.
“Debra has effortlessly infused Laura with a relatability that is captivating audiences,” said Jennifer Salke, president, NBC Entertainment.
Mysteries of Laura comes from Warner Bros. Television, Berlanti Productions and Kapital Entertainment.