Tears of Theory demonstrates the value of making storytelling and personal experience integral parts of International Relations (IR) scholarship. Through an examination of the disappearance of Korean Air (KAL) flight 858 in 1987, the book also explores what it means to conduct research in sensitive and difficult settings. According to South Korea, a female secret agent bombed the plane under instructions from the North Korean leadership, killing 115 people. Many unanswered questions emerged and resulted in two rounds of reinvestigations. Taking this case in the context of the ongoing Cold War, Park-Kang presents the story about a researcher, whose life is deeply entangled with the Cold War mystery. The story is based on the author's dramatic research journey of twenty years on the mysterious spy. The book will be of interest to students and scholars of IR, Asian/Korean Studies, Narrative Studies, Security Studies, Pedagogy and methodology.