Take the yolks out of the whites from the eggs.
Mix the yolks with the sugar, then add the melted chocolate and mix well.
Whisk the whites until it forms peaks.
Delicately add them to the previous mix.
The charlotte : put a plastic foil at the bottom of the springform pan.
Quickly dip a lady finger in the water, then arrange it around the pan. Then, cover the bottom.
Pour half the mousse in it, then put some lady fingers, without diping them into water.
Add what's left from the mousse, and cover with lady fingers dipped in water. Cover with plastic foil, and put in the fridge for at least 4 hours.
Take out of the fridge, and cut the excess.
Unmould, and melt the chocolate with the cream. Spread nicely on top of the charlotte. Leave a few minutes.
There you are, your charlotte is ready !