 FAKE: When Arwen first meets Strider she mentions that only 5 of the  wraiths are behind them. When Arwen is being chased by them at an  hour and 10 minutes and 55 seconds into the DVD there is a clear  shot of the riders chasing them set in a v formation. There are  clearly eight wraiths chasing them. Even if the other four showed up  there should be nine.