The Legend of Mickey Tussler, which was adapted for a television movie called A Mile in His Shoes starring Dean Cain),
Sophomore Campaign, the sequel to Mickey Tussler,
Nobody Has To Know, a psychological thriller that author Nelson DeMille called "A haunting, briskly-paced page turner that explores the darkest recesses of the human psyche while propelling the reader through an intricate series of hair-raising twists and turns. Nobody Has to Know is a masterfully written tale that is expertly told. Frank Nappi knows how to entertain the reader from start to finish."[1][2][3][4]
Welcome to the Show, was released by Skyhorse Publishing in the spring of 2016. Bill Madden of the New York Daily News said of WTS, "...it is an action-packed, heart-warming story that completes the most captivating baseball trilogy ever written." The book was also designated as a "Read Across America Day" selection by Newsday and News 12 Long Island.
I Became an Elementary School Outlaw, Nappi's first memoir which author John Owens called "warm witty and wise" was released in July 2019.
Nappi collaborated with MP Music House in Nashville in the fall of 2017 to produce the song "Buckle Up and Dig In" as part of the celebration of the 10th anniversary of the Mickey Tussler series release. He has since written several songs for MP Music House, including singles "Hey Jay," "The Words Were Right There," and the track "Daddy Wrote The Music" which appeared on the album Heroes Welcome in 2018. Nappi is also credited with the writing of several songs for breakthrough country music artist Atticus Jones, including "Still Above The Ground," "I Wish I Was a Jerk," "Broken Pieces," "I Wonder," "One," "Saltwater Walking", "Walk with Me" and "P-A-I-N", all singles released by MP Music House in 2019. Nappi is also credited with the writing of several songs for upstart jazz artist Tom Petrone, including 2020 releases "Fly Again," "Let's Get Lost," and "One Terrific Christmas Day" and 2021 releases "If I Said I Love You," "That Kind of Summer," "Seaside Serenade" and "Magic."