After the sudden death of his beloved father, Finn notices that his skin and hair are growing steadily paler, which convinces him that he is on his way to becoming completely invisible.

His mother has taken Finn to several doctors, who believe that his new appearance is due to stress and grief over the family's recent loss.

Matters are made worse when Finn returns to school and is cruelly mocked for his appearance by his classmates.

[2] Publishers Weekly and Booklist both gave positive reviews for The Last Invisible Boy,[3] and Publishers Weekly commented "Precise in his metaphors and his characterizations, Kuhlman delivers a study in coping with loss that middle-schoolers will want to absorb and empathize with.

"[4] Kirkus Reviews also gave the book praise, as they felt that Kuhlman's treatment of Finn's grief was well written and believable.