That is why I wonder why, after Adalind signed the contract it has never been mentioned again.It was a while to get the key's answered. but the key's where acknowledged to exist. Is the contract going to be one of those idea the writers drop. with so excuse that it died with the King. Or Viktor rescinded it when he gave up Diana in exchange for killing the King. It is just interesting they bring up a blood contract just before Diana shows up. Are they trying to refresh our memories.
Embrace your inner Biest..... We all have one