LOS ANGELES - Sony's sci-fi production "The Dark Tower" led ticket sales in North American theaters this weekend, but its three-day take of a modest $19.2 million fell on a notably sluggish August weekend.

LOS ANGELES - Sony's sci-fi production "The Dark Tower" led ticket sales in North American theaters this weekend, but its estimated three-day take of a modest $19.5 million fell on a notably sluggish August weekend.