A few scenarios are screwed up a bit as Packard missed keeping the continuity of flow when you choose to call Dr. Hopstern and wait for him. When you wait for Dr. Hopstern directly, then you call a friend Dr. Vivaldi who ends up offering for you to go with her and your computer, Conrad, to either a cryptological trip to France or a dolpin trip to Hawaii. When you choose to take either of these trips, there's no indication of your cancellation of the service call or any mentioning of Dr. Hopstern even looking for you. Maybe Packard figured this wasn't important, but it is important enough to mention because otherwise you lose some of the flow of the story and it sounds more contrived. This book will need to be changed if it were rereleased now like some of the other Choose Your Own Adventures recently because it mentions going to Russia as a possibility implying that we still have problems with Russia specifically when it would be better aimed for writing about Iraq, or possibly even North Korea or China. It is less likely that Packard may be interested in republishing his books as he seems to have sold his rights to R.A. Montgomery, who came out with a movie for this series, which was a great idea. I do not like how R.A. Montgomery started renumbering the books when they are the same stories he used in the old series. Like book #1 is by him now instead of the Cave of Time by Packard. Also, the books I've read by Montgomery just don't seem to be as flowing or creative as the P