Here is Beemer's reported involvement and interest to lie against Kane (in addition to promotion prospects after removal of his boss):
Eakin participates in suspension of Kane's law license, and then resigns.
Here is the reported involvement of Kane's powerful enemies Frank Fina and Mark Costanzo, who were taken under the wing of Philadelphia DA Seth Williams (longtime friend of PA Senator Williams) and who is now involved in his own misconduct scandal investigated by the FBI (see here and here):
Here is Seth Williams' employee Frank Fina's interest to take Kane down:
Mark Costanzo's interest in taking Kane down:
So, people who either testified against Kathleen Kane or held and continue to hold powerful positions (and that does not count judges who she outed and forced to resign):
1) were her subordinates wanting her job (Beemer);
2) were involved in exchange of pornographic emails she outed (Fina and Costanzo), while Fina was "one of the most highly respected Pennsylvania prosecutors" and in neglect to prosecute a high-profile case for political reasons she outed (Fina), and who also had a "security interest" in not being fired from a DA's job, likely in exchange for their testimony against Kane (Fina and Costanzo) and who sued Kathleen Kane for outing their misconduct (Fina and Costanzo).
A brilliant group of disinterested witnesses, what can I say.
And, here is a first news report for a the reward for one of those interested witnesses for their testimony against Kane, Bruce Beemer, a clear indication that their testimony was bought - without disclosure to Kane, as is the usual way of Pennsylvania prosecutors.
In June of 2016, the U.S. Supreme Court reversed a death penalty decision by the Pennsylvania Supreme Court because of participation of Judge Donald Castille who was the District Attorney prosecuting that same death penalty case. Donald Castille was involved in the Porngate scandal, retired and then had the audacity to challenge constitutionality of "age discrimination" in mandatory retirement of judges in Pennsylvania. He has to be happy that he was allowed to retire while keeping his state pension and his law license, instead of dragged away in shackled, as he should have been.
The case was also reversed because Don Castille's subordinate in the DA's office - surprise! - failed to disclose an offer of leniency to the interested witness and knowingly elicited perjurous testimony from the interested witness on two occasions, it's all described in Williams v Pennsylvania interlinked above.
The conviction conveniently removed Kane from office after she refused to do so even despite her illegal suspension, and after she outed local high-ranking judges and prosecutors in a Porngate scandal, causing two judges to resign, but not before one of them, Michael Eakin, participated in suspending her law license.
But, now that the feds are zeroing in on Philadelphia DA Seth Williams (who harbored the two Porngate scandal perverts Fina and Costanzo - likely in exchange for their testimony against Kane that convicted Kane), who knows what other garbage can surface.
Let's note that all of the participants are members of the presumptively honorable class of judges and prosecutors.