ISBN 0-441-00350-8
Published By: Ace Science Fiction

A mysterious silver box appears into lives of three people, a Minister, a Spy and Courier, that shakes the very foundations of their beliefs and offers them the ultimate tool for information. For this box can answers any question, from "Who am I" or "What are tomorrow lottery numbers" to "Does GOD exist". As the various players in this tale via for gaining control of all three parts of this incredible device, the story becomes a tale of greed, fear and survival. As with all of Perry's work, his stories center on the characters instead of the technology. The Trinity Vector spends its time delving into the effects that having access to the 'truth' has on the individuals that the device touched without needing to explain the how, what or why behind it all.

Over all I like Steve Perrys writing, he can usually turn out an interesting tale with human characters and intriguing plots. The Digital Effect is no exception to this. The main character, Gil Sivart, a retired engineer, micro model make and part time private investigator solves the puzzle of the death of the his clients S.O. in a very human fashion. No super powers of observation, no inexplicable leaps of intuition, a slow piecing together of bits of information one step at a time.

The story is basically a mystery that just happens to be set in an orbital city at the end of the 22nd century. As with most stories of this type, the background and setting is secondary to the mystery itself, but in this instance Perry seems to go a little out of his way to toss in bits of history and occasionally tech talk to try and remind you that this is a Science Fiction story as well as a mystery. Though these bits are interesting, they are not really necessary to the story and seem to be a more filler then anything else. Fortunately it doesn't really get in the way of the story and lets you see a little bit more of the world the characters live in