Continuity mistake: The blood that was on Leonard's right cuff disappeared and re-appeared a couple times. When he was cutting the bloody suit, the blood on his cuff was gone. When Leonard looked into the briefcase, the blood on his right cuff re-appeared, but was no longer there when he was sewing the suit's sleeve (or thereafter). (00:31:38 - 00:32:40)
Continuity mistake: Leonard washed his hands and some of the blood on his shirt cuffs/sleeves got wet and diluted, but his cuffs/sleeves were dry when he walked out of the room. (00:28:40 - 00:29:05)
Continuity mistake: Francis pistol-whipped Leonard and - although there initially was no red mark - a red mark could be seen when Leonard attended to Richie's wound. Not long afterwards, the red mark was gone (but should have still been there). (00:21:35 - 00:35:06)
Other mistake: Richie, with a bullet hole through his right side, arrived at Leonard's and thrashed about on the table while his wound was being stitched. He was even turned over so that Leonard could stitch the back side (exit wound). Richie's hair became somewhat disheveled during the procedure, but after he recovered and walked into the other room, his hair was neatly combed/styled and his suit/tie showed no wrinkling or signs of blood on them (unlike his shirt around the wound). (00:22:00 - 00:33:55)
