Some clues from the last epi:
-The person with the gun is caucasian with decent (brown/dark) arm hair wearing a black blazer/coat, white shirt and black glove. We hear a shot, then fireworks (so maybe that is to throw us off) then we see the shooter's hand point the gun down and fire 2 more shots. At the party the only person seen in a black coat is Nolan's bodyguard but he is African American.
-Takeda must immediately leave the party as soon as Charlotte appears screaming in time to get his car and drive to pick up 'Amanda.'
-We do not know how much time transpires from Nolan hitting the loop button to Charlotte's appearance screaming for her mom.
-The sand on Em's hand is likely from Emily's burying of her 'gift.'
-Nolan and Takeda do nod to each other.
-It appears that Daniel is not in the picture when Amanda and Jack arrive (where is he lying unconscious and how did the shooter knock him out while Tyler was distracted and manage to get blood on Daniel?). It is pretty obvious that Amanda is/was clueless and is likely not the shooter.