With Wang Qiang in custody and Detective Li out of harm's way, it seems the threat of the "Black Cat" has at long last been resolved. What new developments lie in store for our hero and his faithful sidekick, Xiao You? Tune into the grand finale of our Detective Li series to find out! [上集答案： 李探长通过用手指盖住手机话筒的方法告诉小尤 - "我在体育馆，你快去广播室抓捕王强。" ]

In the clutches of "Black Cat", Detective Li makes a desperate phone call and recalls a pivotal event in his sleuthing past. What will become of the talented detective? Tune in and find out!

As Detective Li and Xiao You pursue a terrorist threat known only as "Black Cat," Xiao You heads back to headquarters while Detective Li pursues a fleeing "shadow" on his own. In this lesson, Detective Li finally confronts the shadow and learns its true intent. [上集答案：5239]

While Detective Li pursues a fleeting shadow alone, Xiao You returns to headquarters where she rediscovers her mentor's mysterious locked drawer. What lies in wait for the young detective? Find out in today's lesson! [上集答案：九校（第九学校）]

In part one of this five-part story, an emergency meeting at the station reveals that the mysterious "Black Cat" is making some serious terrorist threats, and the police need to react fast. At the same time, this lesson provides a few hints about Detective Li's past. 上集“三条人命案”答案： 经查证，中年男性死者是吴国庆，中年女性死者名叫陈桂芝，青年男性死者叫吴奇。 吴奇的生日是闰年2月29日，所以5次生日之后，孩子应该是20岁出头。但在20多年里，吴奇基本没出过家门，所以长得很白净。因为赌博及其他各种原因，吴国庆经常对陈桂芝实施家庭暴力，吴奇也自然是看在眼中记在心里。案发前的两个礼拜，吴国庆与陈桂芝发生激烈争吵，并再一次发生家庭暴力，而吴奇乘吴国庆不注意的时候逃了出来。那天，吴国庆在实施暴力的过程中将陈桂芝杀死。两个礼拜后，案发的前一天晚上，吴奇半夜回到家中，向吴国庆询问母亲的下落，吴奇怀疑吴国庆将陈桂芝杀死并把尸体藏于地下室，之后发生了父子之间的打斗。因为唯一的钥匙在吴国庆手上，所以吴奇逼吴国庆将钥匙交出。吴国庆不肯，并把钥匙吞到肚子里。之后吴奇便把吴国庆杀死，并刨腹找出钥匙。进入地下室，找到母亲尸体后，吴奇便打开液化气瓶开关，在地下室自杀。

Three bodies, a trail of bloody footprints, and some serious violence. Last episode Detective Li and his partner Xiao You arrived on the grisly scene, and this episode they learn a few more crucial details. This case ends here; can you solve it?

Three bodies, a trail of bloody footprints, and some serious violence. This episode Detective Li and his partner Xiao You arrive on the grisly scene and begin their investigation into three violent deaths. This episode is divided into two parts. It begins here. [上集答案：驯兽师训练猴子拿走了钻石，除了人类之外只有猴子有指纹。]

In part 4 of the series, the indomitable Detective Li and his faithful partner Xiao You find themselves summoned to the scene of a burglary... in a circus. Listen in to the details of the case, and see if you can match wits with Detective Li and determine who committed the crime. [上集答案：根据条件，没有说谎的孩子是毛毛。打破玻璃的孩子是星星。]

The story continues, and we learn in this episode that Detective Li is an eccentric man who may be hiding a few secrets. We also take a break from the murder cases as our favorite Chinese Sherlock turns his powers of deduction to the antics of some naughty neighborhood kids. [上集答案：暗号是“五木：朝阳区”。其中，“五木”就是森林公园；冒号是2点钟；“朝”是十月十日；“朝阳”指早晨、凌晨；“区”从字形上看，就是指东边出口。所以暗号隐藏的内容就是 —— 十月十日凌晨2点，森林公园东边出口。]

In part 2 of this detective story, Detective Li and his assistant Xiao You obtain a coded message from an infamous drug dealer. As usual, Li's problem-solving skills are up to the task. Can you keep up? 上集答案：凶手就是那位撒谎的助手，他将冰刀藏在热水瓶中带进了浴室，并在作案后将冰刀丢进浴池的热水中将凶器融化掉。因为冰刀是低温的，所以也造成了伤口周围呈紫红色。