Overseas was generally well received by critics, including a starred review from Publishers Weekly, who wrote, "At heart this is a delicious story about the ultimate romantic fantasy: love that not only triumphs over time and common sense, but, once Kate overcomes Julian’s WWI-era ideas about honor, includes mind-blowing sex.

"[1] Kirkus Reviews called Overseas "an engaging romantic debut [that] cheerfully bends the rules to unite soul mates Kate and Julian, separated merely by an ocean, a world war and a century.

"[2] Sarah Johnson, writing for the Historical Novel Society, highlighted Williams's skill at interweaving multiple perspectives and timelines.

"[3] She further noted that "the novel compels with its absorbing dual-period mystery and memorable dialogue, which moves from witty to achingly beautiful.

Her dashing, larger-than-life hero fits the classic Edwardian mold; think Rupert Brooke of a sort, but with a less troubled personality and a killer business instinct.