Frald the White wants you to kill the Ordinator Suryn Athones in Vivec. He can be found in the northwestern end of the Hall of Justice (Temple Canton), in the Justice Offices. He has his own little office.
If you mention slander to Suryn, he will explain his actions and he may attack you. If he doesn't, you'll need to get him to attack you first to avoid a bounty and expulsion from the Temple, if you are a member. Talking to him as a vampire will cause him to attack you.
The following Journal ID and Index codes can be used with the Journalconsole command to manually update the quest to a certain point.
Suryn Athones' Slanders (IL_FalseOrdinator)
Index
Finishes Quest
Journal Entry
10
Suryn Athones, an Ordinator at the Justice Offices in Vivec has slandered the dignity of our Order. Frald the White asked me to silence his lying mouth with blood.
100
Finishes quest
Frald the White thanked me for silencing Suryn Athones.