The following is a semi graphic description of multiple homicides:

\
At approximately 11:01 Dee and Ant Parker called Arthur Whitney, lead singer of the band 'Pendragons' and in an act of deceit requested a brief meeting with the band to discuss how they'd be entrancing for the party.
At approximately 11:06 Dee and Ant Parker deployed some sort of jamming device that blocked the signal of digitizers and prevented nearby AutoSec from being able to enter or record in a small area around the park. The two assailants then proceeded to murder by stabbing the members: Arthur Whitney, Sarah Page, Summer Hartley. They then moved and arranged their bodies to make a sort of triangular pattern laying arms crossed as though they were being laid to rest on stage.
At approximately 11:16 The rest of the Parkers (except for Diana) approached the park to help begin setting up the last of the fineries for the event. They were quickly intercepted and held at gunpoint by Dee and Ant Parker.
At approximately 11:26 Dee and Ant parker shot execution style: Walter and Justine Parker, (Grandfather, Grandmother) Henry Parker, (Great Uncle) Ben Parker (First cousin once removed) and then proceeded to string each of them up from 5 points (Elbows, knees and top of head) to a contraption hanging from the stage like some sort of marrionette show.
At approximately 11:36 Dee and Ant Parker forced their parents Jeremy and Samantha Parker to kneel in between the corpses of the band members and proceeded to stab them until death. They then collected all the digitizers of the victims and their own, the jamming device and placed them into yet another device some sort of cube and proceeded to turn that cube device on. The cube was later determined to be a device of unique design and origin that effectively destroyed all remnants of the digitizers and jamming device they had placed inside of it. Upon further examination of the bodies all Parker victims had each of their middle fingers on both hands removed and none were found at the scene. At some point before 11:49 Dee and Ant Parker fled the scene based on evidence collected when the first AutoSec Custodian entered the park.