I really enjoyed this book. The basic idea is in the near future, there is a drug, the street name of Destiny, that is very addictive and deadly to take, but the promise of eternal youth and powers of the mind is a great lure. Some people in this future world, have learned to harness the unused neural pathways in their brain to become Greater-Thans. They have studied and trained to integrate their brains, so they can use these special powers in the battle against jokers, people who have gone insane using Destiny and against the Organization, the people who make the drug. That's were the Obermeyer Institute comes in. They are a facility that trains Potentials to become Greater-Thans. Now that you have a little bit of back history, the main characters are Mac, Sean, EIliot, Steven, and Bach. They each have their own plot line mixed in with the main story of trying to rescue a Potential (Nika) from the Organization. The characters are well fleshed out. I got to care for what happened to each and I believe I got to know them well as individuals. I enjoyed the plot and the progression of the book, it kept me interested, not delving on one subject or person for to long. There was only one issue I had with the book and that was toward the end. Not to put any spoilers in, is hard. The logic of the outcomes of a character who took the drug, didn't feel right to me, and sense it didn't make logical sense to me, it kind of put me off the ending. BUT... I can't wait to see what the next book of the series will bring.