Our Team

Investigator Jason Argandoña was born in Los Angeles County, CA. He is a law enforcement veteran with over twenty years of experience with the Los Angeles County Sheriff and Riverside County Sheriff Departments. Investigator Argandoña held the rank of Investigator where he served in the Major Crimes Bureau, Lake Elsinore Station Investigations Unit, and Internal Affairs Bureau. He enjoys spending time camping and hiking with his family.

Investigator Manny Carrera was born in Los Angeles, CA. He has twenty years of law enforcement experience with Montebello Police Department (CA). He was assigned to the Drug Enforcement Administration as a task force officer and specializes in major narcotics and organized crime investigations. He has a Bachelor of Science from Union Institute & University in Criminal Justice. He enjoys spending time with family and smoking barbecue. Investigator Carrera is fluent in Spanish.

With over twenty years in marketing, advertising, and video production, Krista has developed a strong foundation in strategic planning and data-driven insights to drive results. While her analytical skills fuel performance, her creativity shines in art, design, and video content creation. Originally from beautiful West Virginia, Krista has called Knoxville home since 2001. She loves traveling the world, exploring cultures through cooking classes, and volunteers locally with Habitat for Humanity and Second Harvest Food Bank.

Mallory Garrison is originally from Conway, AR and moved to Johnson City, TN at a young age. She has been in Knoxville since 2020 and loves working for the people of East Tennessee. Mallory started her paralegal career working with Tony Seaton before moving to the Garza Law Firm. She is now the Civil Operations Manager who oversees the firm’s civil division. Mallory has done mission work in Haiti and El Salvador and enjoys volunteering at Garza Law-sponsored motorcycle events. She enjoys spending time with friends and family as well as taking care of her dog, Payton. She also loves trying new restaurants in Knoxville and around the world!

Chad Harrison, a Tennessee native with roots in Gallatin, moved to Knoxville in 2002. He, his wife, and three kids love exploring the Great Smoky Mountains, indulging in activities like hiking, hunting and fishing. Despite his educational background in industrial engineering, Chad’s extensive experience in applied behavior science and psychometrics forms the foundation of his HR career. With over twenty years experience, he has developed leaders and provided executive coaching in ten countries. As Head of People at Garza Law, Chad focuses on talent management strategies, leveraging his insights into both people and processes gained through a career spanning Fortune 500 companies in the retail, travel, finance, and technology industries.

Lyndsay Southern is a native of Campbell County, TN. She’s always had a strong desire to work with the public in the legal field. Lyndsay began her legal career in the Circuit Court Clerk’s Office in Campbell County where she worked for over sixteen years before joining Garza Law. She is now operating the new Jacksboro, TN office as a legal assistant for the Garza Law criminal defense team. Lyndsay helps prepare attorneys for court while ensuring that every client’s needs are being met. Lyndsay is married with a son and daughter. She loves traveling to new places and making memories with her family. In her spare time, she enjoys playing with her son, shopping, running, being outdoors, and hiking in East Tennessee. She can also be found at community events in Campbell County and surrounding areas.

Angela Stembridge brings strong organizational and leadership skills to support the firm’s daily operations to her role as Office Administrator at Garza Law Firm. She holds a Bachelor of Science in Health Management, and is dedicated to fostering an efficient, client-focused environment. Born in Dallas, Texas, Angela’s life experiences span across eight U.S. states and one Canadian province, offering her a broad and diverse perspective that enhances her professional and personal interactions. Outside of work, she enjoys spending time with her husband and three children, exploring new and exciting travel destinations, and reading.