Gerry (L) and Kate McCann, parents of missing four-year-old Madeleine McCann, arrive back at East Midlands International airport, central England September 9, 2007. Kate and Gerry McCann, named as suspects in the disappearance of their four-year-old daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Kate McCann (R) and her husband Gerry (L), parents of the missing British girl Madeleine McCann, arrive home with their children in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Gerry McCann (in white), father of the missing British girl Madeleine McCann, answers the door to a police officer at their home in Rothley, central England, September 10, 2007. REUTERS/Darren Staples (BRITAIN) 

A doctor leaves the home of the missing British girl Madeleine McCann in Rothley, central England, September 10, 2007. REUTERS/Darren Staples (BRITAIN) 

A community support officer (L) speaks with a police officer outside the home of the missing British girl Madeleine McCann in Rothley, central England, September 10, 2007. REUTERS/Darren Staples (BRITAIN) 

Police officers carry suit cases into the home of Kate and Gerry McCann, parents of the British missing girl Madeleine McCann in Rothley, central England September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Kate and Gerry McCann, parents of the British missing girl Madeleine McCann, are driven into their home in Rothley, central England September 9, 2007. British couple Kate and Gerry McCann, named as suspects in the disappearance of their four-year-old daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Darren Staples (BRITAIN) 

Kate McCann, mother of missing four-year-old Madeleine McCann, arrives at East Midlands International airport, central England September 9, 2007. Kate and her husband Gerry, named as suspects in the disappearance of their daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Police officers are reflected in a window decorated with toys at the home of missing British girl Madeleine McCann in Rothley, central England September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Gerry (L) and Kate McCann, parents of missing four-year-old Madeleine McCann, arrive back at East Midlands International airport, central England September 9, 2007. Kate and Gerry McCann, named as suspects in the disappearance of their four-year-old daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Kate McCann (L), mother of the missing British girl Madeleine McCann, is greeted by her uncle Brian Kennedy as she arrives home with her daughter in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Gerry McCann, father of missing four-year-old Madeleine McCann, arrives back at East Midlands International airport, central England September 9, 2007. Kate and Gerry McCann, named as suspects in the disappearance of their four-year-old daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Gerry and Kate McCann (top), the parents of missing four-year-old Madeleine McCann, arrive back at East Midlands International airport, central England, September 9, 2007. The McCanns, named as suspects in the disappearance of their four-year-old daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Gerry and Kate McCann (L), the parents of missing four-year-old Madeleine McCann, arrive at East Midlands International airport, central England, September 9, 2007. The McCanns, named as suspects in the disappearance of their daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Kate McCann, mother of the missing British girl Madeleine McCann, arrives home with her daughter in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Gerry (C) and Kate McCann (L), parents of missing four-year-old Madeleine McCann, arrive back at East Midlands International airport, central England September 9, 2007. Kate and Gerry McCann, named as suspects in the disappearance of their four-year-old daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Kate McCann, mother of the missing British girl Madeleine McCann, arrives home with her daughter in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Kate McCann (R) and her husband Gerry (L), parents of the missing British girl Madeleine McCann, arrive home with their other children in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Kate McCann and her husband Gerry, parents of the missing British girl Madeleine McCann, arrive home in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Gerry and Kate McCann (L), the parents of missing four-year-old Madeleine McCann, arrive at East Midlands International airport, central England, September 9, 2007. The Canns, named as suspects in the disappearance of their daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN) 

Kate McCann (L) and her husband Gerry, parents of the missing British girl Madeleine McCann, arrive home with their children in Rothley, central England, September 9, 2007. REUTERS/Darren Staples (BRITAIN) 

Gerry and Kate McCann (L), the parents of missing four-year-old Madeleine McCann, arrive at East Midlands International airport, central England, September 9, 2007. The McCanns, named as suspects in the disappearance of their daughter Madeleine in Portugal, flew home on Sunday insisting they were innocent. REUTERS/Rui Vieira/Pool (BRITAIN)