Piggeldy asks Frederick to tell him about Easter. Frederick has some trouble remembering, which causes some cross feelings, but then luckily he gets a big hint.

Donna goes through the German alphabet, including the three umlaut letters (Ä, Ö, and Ü) and the sharp S (ß), a letter found only in German.

Everyone weighs their options regarding the suspect's wife, who remains in custody, while Nicki's father proves himself to be a very difficult person to get along with.

Katja tells her mom that the police have found the murder weapon that killed Katja's father. Meanwhile, the wife of the top suspect is brought in for questioning.

Selma and Lisa talk on the phone. Lisa is still on vacation and enjoying great weather. While they are talking, Selma makes an exciting discovery.

Yvonne is crushed after Oskar leaves, and has a hard time getting any emotional support from her mother.

The Dufrenes are a relatively new Berlin band looking to expand their fan base and play more concerts. You can listen to their music at https://myspace.com/dufrenesberlin.

Various residents of Hausach compete with aircraft they have constructed themselves. Who will win?

We see how Lisa and Selma unknowingly walked right by Nico's lost bag after it got left on the street. They were discussing Lisa's vacation plans and Selma's last trip.

Yvonne falls for Oskar and says she would like to continue their relationship, but Oskar bids her farewell, knowing that it can't continue.

How do Martin and Michael fare on the ski jump? And what other events are taking place in the playmobile town of Hausach? Watch this video to find out.

Here is a final set of questions from the German citizenship test, covering topics ranging from employment to children's welfare.

While Katja, Ben, Henning, and Harry all look into the weapon that has surfaced, Lothar meets Nicki's father, who is a very difficult person.

The story of Nico's lost bag continues: two men find it in the street and check if there's anything useful inside.

Oskar enjoys a date with Yvonne in which they mainly talk about her – but he also writes her a letter with the truth.