Completely agree, whoever was targeting properties in this way, was forensically savvy. In the Netflix series they had a quite unsettling re-enactment, the offender with a medical mask over his mouth getting into bed with a young girl. I think there’s a strong argument that CB could have been this lone male intruder. He was known to be forensically savvy, according to one of his old friends he had boasted about breaking into an apartment & performing a sex act naked in a room with young females. He also has a history of sexual assault & intrusions - he was active in the area at those times & as far as I can tell, these crimes stopped when he wasn’t in the Algarve. IMO I wouldn’t be surprised if the BKA have a hunch that CB was this offender, but there’s no concrete evidence to prove he was. IMO there’s a massive difference between thinking somebody is responsible for a crime & having the evidence to run a prosecution. Same applies to the €100000 theft, HCW thinks CB may have been involved but there’s no proof. That’s one of the reasons why I often wince & frown when it’s suggested that they don’t have evidence for the crimes they’re actually involved in.