["The San Sebastian"] is a book in the "Treasure Island" tradition, with the boy hero who tells the story, the good sea atmosphere, the exciting and mysterious happenings, and the colorful characters. Unlike "Treasure Island," however, it is contemporary Irish in setting and flavor…. The style is pleasant, the village life and the village people are well portrayed, and Pat's adventures with a couple of exotic villains provide the kind of action and suspense younger teen-agers enjoy.
Lillian Morrison, "For the Teen Age: 'The San Sebastian'," in The Saturday Review (copyright © 1954 by Saturday Review; all rights reserved; reprinted by permission), Vol. XXXVII, No. 46, November 13, 1954, p. 94.