I wasn't shocked, I knew she would have to do it because she was so open. Having to lie to get her sister away from her parents was probably the only lie she told in her life, born of desperation, and much as she loved Martin as a friend she would never be able to do that for him.
I had to stay up and watch ABBA after that, just to be able to sleep! It was brilliant, I shall really miss it.
It wasn't ever said that Gertrud and Philip worked together, I assume they did know about each other but maybe not. Gertrud did seem a bit too nice, so I was suspicious of her. I'm so pleased that they are making a new series, but i suppose that they storyline would have to be continued in a future series, as the Evil Mastermind probably has to start plotting all over again - he has killed all of his little helpers!