There is nothing quite like reading a physical book. The novel is still in print and widely available in paperback. You can find new or used copies at:

Duncan wrote for a young adult audience, focusing on the emotional and moral consequences of actions, not just high-body-count horror. Why "I Know What You Did Last Summer" Remains Relevant

Digital versions (E-books/PDF) are available for purchase on platforms like Amazon Kindle or Google Play Books.

It is essential to understand that the 1973 book and the 1997 movie are vastly different, as noted in analyses comparing the two.

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If you're interested in reading the novel, I recommend searching for a legitimate online source or checking your local library's collection. You can also try searching for e-book versions or PDF copies through online retailers or digital libraries.

Here is a deep dive into the brilliance of Duncan’s original masterpiece, how it differs from its famous film adaptation, and why its themes still resonate in the digital age. The Plot: A Fatal Mistake and a Haunting Secret

Lois Duncan's writing style in "I Know What You Did Last Summer" is engaging and suspenseful, making it easy to become invested in the characters' lives. The novel's structure, which alternates between the perspectives of the four friends, adds to the sense of confusion and uncertainty.