You're right; it is a frustrating case. I feel my patience running thin when I hear they're still looking for "the killer's blood" - it's as if they have a bloodlust! He undoubtedly would however have left traces of DNA from sweating / breathing / shedding particles of skin and hair, either onto Sophie's clothes or onto his own clothes. Such a frenzied attack is bound to have left traces. If they focus on her clothes (and her hair if it's still preserved) they might find her killer.
You're right; it is a frustrating case. I feel my patience running thin when I hear they're still looking for "the killer's blood" - it's as if they have a bloodlust! He undoubtedly would however have left traces of DNA from sweating / breathing / shedding particles of skin and hair, either onto Sophie's clothes or onto his own clothes. Such a frenzied attack is bound to have left traces. If they focus on her clothes (and her hair if it's still preserved) they might find her killer.
Are they going to test the DNA that was found by the French on Sophie’s boot? We know it’s male and not Bailey’s but it should be tested.