Solution for the Demo
"Waking up Frankie"
Use the water with the bottle of water.
"Frankie's hungry."
Go to Linos and bring Frankie everything until you get the crab salad. Afterwards Frankie continues with the story.
"Transport to the other side"
Try using the rowboat. But Linos is the key.
"Linos must look the other way"
As soon as Linos looks in the other direction, go around the market, so far as possible.
"Red Herring"
Colour the fish differently.
"Signpost"
After you've discovered the dead end, you can turn the sign.