She showed him her painting before she'd decided to. That was the moment.

Grace Deuces has spent ten years painting in secret, hiding canvases from a father who has her whole life mapped out. When Colt Simmons arrives as the new groundskeeper — seventeen, from the foster system, carrying everything he owns in a single bag — she does something she has never done before: she lets him look.

He says Monet and Turner before he says his name.

Over eight months, they build a love neither of them planned: late evenings in a shed, a bucket list in two columns, a language of Morse code tapped on a shared wall. Then Grace's father finds out. And Colt receives a diagnosis that gives him two months.

He makes a plan to set her free. She refuses to be freed.

The Last Thing He Taught Me is a story about a bucket list crossed off one item at a time, a prom night on a rooftop with a city built from folding chairs, a cassette tape, a goodbye dance, and what one person can leave in another that outlasts everything.