Shane Spiller helped convict child killer Derek Ernest Percy.
Photo: Craig Sillitoe
![](../images/percy_derek/percy003.jpg)
Derek Ernest Percy
![](../images/percy_derek/percy004.jpg)
Derek Percy leaves the Supreme Court.
Photo: Simon O'Dwyer
![](../images/percy_derek/percy005.jpg)
Percy as he looked in 2005.
![](../images/percy_derek/percy006.jpg)
The 58-year-old
is suspected of killing (inset top) Simon Brook, 3, (middle)
neighbours
Marianne Schmidt and Christine Sharrock, 15, and (bottom)
Jane, Grant and Anna Beaumont.
![](../images/percy_derek/beaumont_children.jpg)
The Beaumont children
![](../images/percy_derek/percy007.jpg)
![](../images/percy_derek/percy008.jpg)
![](../images/percy_derek/percy009.jpg)
Derek Percy is driven into police headquarters in St
Kilda Road August 30, 2007,
for interrogation by homicide detectives.
Photo: Jason South