In a cold-blooded attack on an art transport Tereza, the pregnant girlfriend of Commissioner Robert Marthaler, is mortally wounded. Since Marthaler is thus affected by the incident himself, his boss Herrmann denied him the appropriate investigation. However, Marthaler does not let it stop him and continues to investigate on his own. He soon finds out that there seems to be a connection between the current assault and an unexplained prostitute murder more than 30 years ago.

Kommissar Marthaler - Engel des Todes

In his new case, Marthaler is puzzled. A bachelor party ended with a cruel bloody act. While the investigations lead Marthaler to France, there are more murders in Frankfurt. Marthaler and his team soon chase after a beautiful stranger, who seems to be the key to solving the case. Continuation of the successful series with Frankfurt Chief Commissioner Robert Marthaler, based on novel works by Jan Seghers.

Kommissar Marthaler - Ein allzu schönes Mädchen

Lotte and Louise meet at a summer camp. Everyone who sees the two falls open in surprise, the girls look so much alike. It doesn't take long before they find out that they are actually twins.

Das doppelte Lottchen

Lea's video goes viral. It features Robert trying to withdraw some cash and Gerhard, the bank manager, refusing. It's not that Robert isn't liquid, but his son is about to leave Gerhard's pregnant daughter standing at the altar two days before the wedding and Gerhard wants revenge. Robert fumes, Gerhard won't budge. And teenage Lea has filmed the whole thing for her video blog, spreading the word that the bank has stopped paying out and has possibly gone broke. This triggers a run on the bank, which has to close its doors when their cash runs out, generating a financial crisis that goes far beyond the sleepy German town.