The plot might sound unusual at first, but the author writes beautifully about how a snail, brought in by her caregiver, becomes a comforting companion during her months of being bed-bound by a mysterious illness. 

By the end, you'll know a surprising amount about snails and gain insight into the author's experience with dysautonomia and chronic fatigue syndrome.

It's also a quick read—I finished the entire book in one sitting.