This study aimed to explore the therapist experience of delivering the lifeline component of narrative exposure therapy (NET), an intervention for individuals with posttraumatic stress disorder resulting from exposure to multiple traumatic events. The lifeline in NET involves constructing a chronological representation of the client's life using physical symbols to depict traumatic events as well as positive experiences. A semistructured interview was conducted with 16 therapists experienced in delivering the lifeline component of NET to adult clients. The data from these interviews were analyzed using thematic analysis. Five overarching domains were identified, each encapsulating three themes. The first domain pertains to the overlapping purposes of the lifeline, united by the vital function of developing the therapeutic relationship. The second domain describes the value and potential therapeutic mechanisms of the lifeline's "whole life" perspective. The third domain speaks to the intensely emotional nature of the lifeline process and some of the challenges this presents. The fourth domain relates to the physicality of the lifeline and the value this adds beyond a purely verbal method. The final domain encompasses several challenges described by therapists as well as potential areas for further development. This study provides a rich account of the novel lifeline component in NET. The findings provide direction for refinement of clinical practice and avenues for future research.