Thomas Herzsprung is an author I came across on TikTok. I started following him without having read any of his books mostly because of his personality, but I kept looking for his books in the bookstores. I knew he wrote psycho thrillers and since I’m a huge fan of Sebastian Fitzek and the like, I wanted to give him a chance. Yet, I never found a single book of his in the bookstore and since I usually found something else to take home with me instead, I never thought of ordering a book. Now I recently discovered that as an Amazon Prime member I have access to a selection of free e-books and luckily, his book „Der Behandler“ was available for free, so I decided to give it a try.