Tennessee Attachment Pro Corpus (TAPE) is a collection of psychotherapy transcripts, standardized assessments, and other clinical data from a sample of adults with attachment difficulties. The data were collected from individuals who participated in a randomized controlled trial of a cognitive-behavioral therapy for attachment difficulties. The TAPE comprises four distinct datasets, including: 1) Transcripts from sixty-four psychotherapy sessions; 2) Standardized assessments, including the Attachment Story Completion Task (ACT), the Adult Attachment Interview (AAI), and the Relationship Questionnaire (RQ); 3) Clinical interviews and demographic information; and 4) Qualitative data from audio-recorded interviews with individuals and their therapists. The TAPE is a valuable resource for researchers studying the causes and effects of attachment difficulties, as well as the effectiveness of psychotherapies designed to treat them.