1.   What happened to her is still an unsolved mystery.

2.   What happened to the men on the expedition will always be an unsolved mystery.

3.   What happened to the paintings after that is an unsolved mystery.

4.   BLOOD on their hands, as it were, readers have been grappling with the unsolved mystery we set last week.

5.   And, as with any science, it still holds more unsolved mysteries than Hollywood could ever plot.

6.   As a result, the Bloch case has remained an intriguing unsolved mystery of the final years of the Cold War.

7.   Alan Wanzenberg, who lost a partner in the crash, sounded less angry than sad at this bizarre twist in the unsolved mystery of the tragedy.

8.   But detectives say there is still one unsolved mystery surrounding the case.

9.   Despite better understanding of the forces that drive the climate, the reason for the January thaw remains an unsolved mystery.

10.   How H. pyloris is transmitted is only one of several unsolved mysteries about a bacterium that should become as familiar to people as E. coli, Salmonella and Pneumococcus.