"So, you're saying there were five people in this group?" Captain Ma asked, frowning as he focused on the key detail. "Counting the one who's dead, that means we've only caught four."
"That's right, five in total, but only four of them got on the train. The man in the wool hat didn't board," Yuan Si stated.
"Oh, I see." 'That would explain it,' Captain Ma nodded, though he felt a pang of regret. 'The man in the wool hat Xiao Li mentioned is likely a key figure. We didn't get him this time, and catching him later will be even harder.'
