Constance is about a person, or at least the simulacrum of a person, who investigates her own death. The premise is intriguing, but the murder mystery is possibly the least interesting part of this science fiction romp, a busy action story with moments of unexpected depth. In between the sleuthing and the schemes for world domination and the eluding of people with guns, we are invited to grapple with genuinely thoughtful questions about the philosophical, legal and ethical implications of cloning and scientific innovation in general.
Full of technological surprises and ethical dilemmas, this inventive thriller hums with the electric excitement of the best 1950s science fiction ... The book’s plot expands to encompass more characters, further twists and bigger issues, but it never loses its winning human spirit.