Patton Oswalt is honoring the completion of something near and dear to his heart: the posthumous publication of his late wife Michelle McNamara’s book. On Tuesday, the comedian shared a touching post on Twitter: a photo of a copy of the true crime book McNamara had been working on at the time of her death, I’ll Be Gone in the Dark, sitting atop her resting place. The late crime writer died unexpectedly in her sleep at age 46 in April 2016, leaving Oswalt to care for their 8-year-old daughter, Alice. Following her death, Oswalt, 49, swore he would finish the book for her. It’s now published.