The conclusion to the Ripley novels finds Tom in peril. A new arrival in his village, an American man and his wife, appear to know more about Murchison than is safe for Tom and Heloise. The Pritchards are intrusive and Tom does what he can to avoid them, but when David Pritchard follows the Ripleys to Morocco Tom realises he must take steps to protect the life he has made.
The tension in this novel is mainly from the threat of discovery, and once again, the reader is placed on the side of murderer and fraudster Ripley, even willing him on to murder. The amorality of Tom Ripley is in counterpoint to the traditional moral position of crime fiction, where readers look for the punishment of the guilty, not their escape.
There’s ambiguity at the end of this book and it’s conceivable that Highsmith would have written more about Tom Ripley had she lived longer.