I'm sorry but I also got stuck without the key.
But from what I've seen, the production is really great on the intro cinematic, and story premise reminded me a bit of the old school point'n'clicks, such as Gabriel Knight, which I deeply adore.
The beginning of the story got me puzzled though: the dude is depressed about having been laid off his job, but he lives in a mansion with a butler. What kind of job did he have to support his lifestyle, some kind of executive position in a huge corporation?