Former Philadelphia police officer: 'I planted drugs too many times to count'

He planted drugs how many times?

Former Philadelphia police officer Jeffrey Walker was once hailed as one of "Philadelphia's finest"—participating in well-publicized drug raids. That is, until he was busted by the FBI:

Fifteen years later, an FBI case revealed a different Jeffrey Walker, then a member of the Narcotics Field Unit. Busted in a sting in May 2013 - the FBI caught him stealing money from a drug dealer - Walker pleaded guilty and began cooperating with federal investigators.

Walker, who is in federal custody awaiting sentencing for his February 2014 guilty plea in federal court, faces a maximum of life behind bars.

In the meantime, he is expected to be a star witness this week in the federal trial against six Philadelphia narcotics officers arrested with his help: Thomas Liciardello, Perry Betts, John Speiser, Michael Spicer, Linwood Norman - Walker's longtime partner on the narcotics unit - and Brian Reynolds, Walker's old "Robin."

Walker took the stand today and stunned the courtroom with his testimony:
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