Maine-based clinical psychologist Mary E. Plouffe will talk about her new memoir “I Know It In My Heart: Walking Through Grief with a Child.” The book details Plouffe’s grief following the death of her sister while also caring for her 3-year-old niece. The book gives readers an intimate look at childhood grief, adult sibling loss and the loving family ties that heal.

WHEN: 7 p.m. Thursday

WHERE: Longfellow Books, 1 Monument Way, Portland

HOW MUCH: Free

INFO: maryeplouffeauthor.com; 772-4045