The Marriage Clinic presented a complete marital therapy program based on John Gottman's much heralded research that revolutionized couples and marriage therapy. In 2024, John Gottman and Julie Schwartz Gottman revised and expanded upon their technique to consider the issues facing modern couples with The New Marriage Clinic. This casebook, a new iteration of Julie Schwartz Gottman's The Marriage Clinic Casebook, bridges the gap between powerful theory and application with new scenarios. With contributions from 16 Gottman experts and edited by Gottman directors Carrie Cole and Donald Cole, this resource offers crucial insights into doing this work across a broad range of couples and relational issues. Readers will find detailed information about working with comorbidities and complex treatment issues. The topics addressed include substance abuse, depression and anxiety, eating disorders, neurodiversity, sexual dysfunction, PTSD and complex trauma, LGBTQIA+, parenting, cultural and racial identity, and more. Contributors include: Laurie Agge, MFT Ozge Altan, PhD Zach Brittle, MFT Willima Bumberry, PhD Mesha Ellis, PhD Sam Garanzini, MFT Mary Beth Georg, LPC Filiz Kaya, PhD Kim Lampson, PhD Michael McNulty, PhD Vagdevi Meunier PhD Robert Navarra PsyD Jordan Rullo, PhD Lawrence Stoyanowsi, RCC Darren Wilk, RCC Alapaki Yee, MFT.