Wolfblood Secrets is a miniseries that aired from September 21st-October 19th on CBBC. According to Debbie Moon, 10 episodes have been created, and all of them have been broadcast.
Here are all 10 episodes and the corresponding links:
The miniseries' premise is a government investigation into the dangers of wolfbloods, with Jana and her friends being interviewed by two investigators named Smith and Jones. However, due to the commonness of these names, it is possible that they are pseudonyms. A great amount of each episode consists of clips from other series or Jana Bites.