Shane Spiller helped convict child killer Derek Ernest Percy.
Photo: Craig Sillitoe

Derek Ernest Percy

Derek Percy leaves the Supreme Court.
Photo: Simon O'Dwyer

Percy as he looked in 2005.

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.

The Beaumont children



Derek Percy is driven into police headquarters in St
Kilda Road August 30, 2007,
for interrogation by homicide detectives.
Photo: Jason South