Marshall Lyles, LPC-S, LMFT-S, RPT-S, EMDRIA Approved Consultant Marshall Lyles is a Licensed Professional Counselor-Supervisor (LPC-S), Licensed Marriage and Family Therapist-Supervisor (LMFT-S), Registered Play Therapist-Supervisor (RPT-S), and EMDRIA Approved Consultant with over 20 years of experience in family and play therapy. Based in Austin, Texas, he specializes in attachment trauma and expressive therapies, particularly Sandtray Therapy as a powerful tool for processing trauma and dissociation. Throughout his career, Marshall has worked in various mental health settings, developing expertise in relational neuroscience, attachment-informed therapy, and trauma-focused interventions. He is a sought-after speaker, trainer, and consultant, presenting nationally and internationally on the integration of EMDR, Sandtray Therapy, and Play Therapy to support deep healing and transformation. In addition to his clinical and training work, Marshall offers supervision and consultation for professionals pursuing EMDR certification and Registered Play Therapist (RPT) credentials, with a focus on incorporating expressive therapies into trauma treatment. He is also a published author, contributing to professional journals and co-authoring books such as Advanced Sandtray Therapy: Digging Deeper into Clinical Practice, Counseling Families: Play-Based Treatment, and EMDR with Children in the Play Therapy Room: An Integrated Approach. Marshall is currently completing his Ph.D. in Marriage and Family Therapy, further deepening his commitment to advancing the field of trauma-informed care.