Grand Theft Auto Online's final week of Halloween mayhem adds even more scary cosmetics, battles with horrific clones, and extra goodies for playing Halloween modes.

You can purchase a BF Weevil Custom at Benny Original Motor Works; it's decked out with flame decals and roof spikes. If you log in and play GTA Online on October 31, you can get the Sasquatch outfit for free. If you log in this week, you can also claim the Death Mask from the Judgement Day mode.

Wandering out in Los Santos, you might find driverless vehicles or be stalked by a menacing figure that looks like you. Details are scarce, but it seems that if you are out in the online open world, there's a chance you'll be pursued by a killer clone. Keep an eye out for the Clone Slasher.