After the termination of their activities at the institution, it is not easy for the four heroes of the series - Guy, Noam, Roy and Daria - to return to a routine life of studies and hanging out with friends. Guy tries to solve the problem and decides to recruit his friends to help his father find out who is stealing the commercial secrets of the company he works for. While preparing for the industrial espionage operation, the children begin to notice something strange: a mysterious red-haired woman is following them. Why? What does she want from them? The children decide to involve Hanan, the Mossad man who recruited them, and it turns out that they have been caught up in a particularly exciting affair, which spans three continents, threatens the State of Israel, and involves a dangerous adversary they know very well. The Tel Aviv operation puts the heroes through tougher tests than ever, and brings the Secret Mission series to a new peak of tension and excitement. "The best spy series for youth written here in recent years" - Mako The Manhattan Operation was selected for the Ministry of Education's book parade w The Berlin Operation won the notebook award for an outstanding youth book w The Cairo Operation won the Deborah Omer Award for children's and youth books w More than 100 thousand copies were sold.