I find novels written in letters beyond charming and this World War I novel was charming. It very much reminded me of The Guernsey Literary and Potato Peel Pie Society in that two charming characters fall in love with each from a distance. Evie is a young woman with too much energy to be pent up at home while her brother and his best friend goes off to war. She starts writing them both immediately, trying to keep their spirits up and live vicariously through them. She's stuck at home attending tea parties, knitting scarves for soldiers, and writing the most humorous and heartfelt letters to Will (her brother) and Tom (his best friend). As the years progress and the tone of the war changes, she starts to find herself falling for Tom, but she's pretty sure it's one sided. What would Tom ever see in his best friend's younger sister? Romantic, thrilling, and full of wit and charm, this novel will be sure to charm readers.