A serial groper, who has been linked to grabbing teenage girls and young women walking alone in various locations in Watsonville, struck again this week. Police say the man walked up behind a 15-year old girl and groped her on Green Valley Road near Quiet Meadow Drive at around 5:45 p.m. Tuesday evening. The girl reportedly fled and was not physically hurt, meanwhile her attacker is still being sought. Police say the groper struck a dozen times since March, most recently in early July.