My Journey Into the Heart of Terror: Ten Days in the Islamic State (Hardcover) (ISBN-13: 9781771642248)

Todenher became a judge in 1972 and was elected to the German parliament that same year. During his eighteen years in politics and as party spokesman for development policy and arms control, he attracted as much public attention for his political activities as he did for his humanitarian endeavors. In 1975, he traveled to Chile and met with the then dictator Augusto Pinochet, paving the way for the release of 4,500 political prisoners. In the 1980s he visited Soviet-occupied Afghanistan multiple times and raised money for refugees. After his political career he joined one of Europe's largest publishing companies, Hubert Burda Media.

Following the terrorist attacks of 9/11 he was outspoken in his opposition to the U.S.'s war in Afghanistan and critical of the planned campaign against Iraq. He argued fervently in favor of diplomatic solutions. To better understand the relationship between the Western and the Muslim world, Todenher has traveled with Afghan freedom fighters to Soviet occupied Afghanistan, to Algiers during the Algerian War, and to Tunisia during the crisis of Bizerte. He has visited other Arab and Muslim countries on countless occasions. Thanks to his experience in the courtroom, Todenher firmly believes that you cannot judge a case until you have heard from both sides. He urged the U.S. governments to settle their conflicts with Iraq, with Syria and with Iran through negotiations and took up this matter in direct contact with the governments of Muslim countries.

In 2014 he became the first Western journalist to be granted access to territories controlled by the Islamic State of Iraq and Syria (formerly referred to as ISIS), where he met with gun wielding child soldiers and interviewed ISIS fighters, prisoners, and members of the public caught up in the battle for Iraq and Syria.

Todenher has published numerous best-selling books in Germany, sharing his conviction that peace should be achieved through negotiations only. He donates the royalties that he receives for his books and the larger part of his private wealth to humanitarian projects for children in Afghanistan, Pakistan, Iraq, Israel/Palestine, Syria, and the Congo.