Underworld

From the initiation of the newcomers, a bond forms between the two boys. Eckardt admits that he is an excellent computer hacker and introduces Greg to the secrets of the underworld, which involuntarily pulls him into a dangerous adventure. With Eckardt's sudden and mysterious disappearance, Greg begins to question everything he previously took for granted. The underworld knows his name and calls him to come and play. The author has conducted extensive research on cyber hacking, and this, combined with a well-written and conceptualized storyline, makes for thrilling reading material.