Claudia Lawrence disappeared in York in March 2009.
The 35-year-old worked as a chef at the University of York and was due to start an early shift on 19 March, but she never arrived for work. Her disappearance was reported to police after friends and family became concerned.
Despite a huge investigation, searches and several arrests over the years, nobody has been charged in connection with Claudia's disappearance.
Her body has never been found and exactly what happened to her remains unknown.
It is one of those cases where it feels as though somebody must know something.
Do you think this is a case that could still eventually be solved?
The 35-year-old worked as a chef at the University of York and was due to start an early shift on 19 March, but she never arrived for work. Her disappearance was reported to police after friends and family became concerned.
Despite a huge investigation, searches and several arrests over the years, nobody has been charged in connection with Claudia's disappearance.
Her body has never been found and exactly what happened to her remains unknown.
It is one of those cases where it feels as though somebody must know something.
Do you think this is a case that could still eventually be solved?