Debby Ryan Becomes Aunt Lucy in 'Mysteries of Laura' Season Finale Tonight

Debby Ryan is back on The Mysteries of Laura tonight for the show’s season finale.

The 23-year-old actress stars as Laura’s (Debra Messing) half-sister, Lucy, who made her debut during last week’s episode.

In the season finale, “The Mystery of the End of Watch”, a drug kingpin is taken down, but at a high cost for the folks at the precinct. Meanwhile, Jake makes a huge decision about his future with Laura.

Also, Lucy steps up to play ‘Aunt’ Lucy and looks after Laura’s kids.

“The Mystery of the End of Watch” airs TONIGHT, Wednesday, March 2nd @ 8PM ET/PT on NBC.