Amy Acker

In the latest round of pilot castings, Eric Christian Olsen has been tapped as the lead in ABC’s untitled Ricky Blitt comedy pilot, Taylor Schilling has landed the lead in NBC’s drama pilot "Mercy," and 9-year-old Dakota Goyo has been cast as the young lead on ABC’s untitled Daniel Cerone drama pilot.

Additionally, Brad Henke has been cast in the Cerone pilot, Amy Acker has joined ABC’s "Happy Town," and LL Cool J has closed his deal to co-star on CBS’ "NCIS: Legend."

The untitled Ricky Blitt comedy, from WBTV, centers on a guy in his thirties (Olsen) who hasn’t quite grown up and finds himself torn between his needy best friend and the newfound love of his life and her teen kids. Olsen ("Brothers & Sisters") is repped by UTA.

The UMS-produced "Mercy" is a comedic drama about three nurses bound together in friendship. Up-and-comer Schilling, repped by Gersh, will play the central role of Veronica Callahan, who works as nurse at Mercy Hospital after a tour in Iraq.

The Cerone project, from ABC Studios, centers on a low-level detective (Jimmy Wolk) whose genius 11-year-old brother (Goyo) helps him solve crimes. Canadian-born Goyo is repped by WMA and Thruline.

Henke will play the detective’s partner and best friend.

In "Happy Town," a small-town murder mystery, Acker will play the wife of the lead, cop Tommy Conroy (Geoff Stults). She is repped by APA and Insight.

The backdoor pilot for the "NCIS" spinoff, from CBS Par, will air as a two-part episode of "NCIS" this spring.

LL Cool J will play Special Agent Sam Hanna, a former Navy SEAL who works in the undercover unit of NCIS in Los Angeles. The rapper-actor is repped by Endeavor and manager Jason Barrett.