An emotional and heart-warming novel from the bestselling author of TikTok sensation Pack up the Moon. 'A raw and genuine look at motherhood, A Little Ray of Sunshine is a lovely ode to love in all of its many forms, family lost and found' Ashley Poston, author of The Dead RomanticsA kid walks into your bookstore and... guess what? He's your son.The one you put up for adoption eighteen years ago. The one you never told anyone about. Surprise!And a huge surprise it is.It's a huge surprise to his adoptive mother, Monica, who thought she had a close relationship with Matthew, her nearly adult son. Until he secretly arranged a vacation to Cape Cod so he could meet his birth mother... without a word to her.It's also a surprise to Harlow, the woman who secretly placed him for adoption so many years ago. She has built a quiet life, running a bookstore with her grandfather, and is happily single... though she can't help gravitating toward Grady Byrne, an old friend who has moved back to town, three-year-old daughter in tow, and no wife in the picture.When Matthew walks into Harlow's store, she faints. Monica panics. And all their assumptions about what being a parent really means explode...This summer will be full of more surprises as both their families are redefined...and as both women learn that for them, there's no limit to a mother's love.