Found a clue which JM may not be dead.

这是BBC为Watson弄得符合剧情的博客。在之前的博客文章评论里，这个匿名的人（Anonymous）就是Moriarty，不断给Sherlock发送威胁文句。
如图评论是在Sherlock回归的时候，也就是Moriarty死后两年，出现的。
至少说明剧组在这里留下悬念。
那个“Did you miss me?”的病毒视频也就有可能不是Mycroft为留下Sherlock而故意散播出去的了。

关于Sherlock Season3的相关推测，见：
http://tieba.baidu.com/p/3189515996

此人曾给Sherlock发送过3封类似如图密码邮件。

推断Anonymous为Jim Moriarty的理由仍来源于Sherlock的博客：

在Molly的博客里有类似佐证：

这个Jim就是曾和Molly在一起的Moriarty。

而Moriarty找上Molly的原因是：

她在文中提到了Sherlock。

之后就出现了评论：
Oh!! How can I delete this?! I meant to say 'you-know-who' not his name!!
Don't read this! Nobody read this!
Molly Hooper 26 March 00:12
Hi, sorry, are you the lady who works in the morgue? The one with the nose?
Jim 26 March 00:14
Who are you?
Molly Hooper 26 March 00:15
Sorry! I work in the IT dept. Stupid night shift.
Jim 26 March 00:17
Are you all right? You've gone quiet...
Jim 26 March 00:22
Sorry. I'm just feeling a bit silly. I didn't know anyone read my blog. What's wrong with my nose?
Molly Hooper 26 March 00:26
Nothing. It's a cute nose. I hope you don't mind me saying. I'm here all night so I need more coffee.
Jim 26 March 00:28
Okay.
Molly Hooper 26 March 00:30
Do you like coffee?
Jim 26 March 00:32
Yes
Molly Hooper 26 March 00:34
Would you like to meet for coffee? In the canteen?
Jim 26 March 00:35
Erm... okay. 5 minutes?
Molly Hooper 26 March 00:40
See you there!
Jim 26 March 00:41

关于第三季我还是有一个问题不是很理解。就是当时Cam和Sherlock等人在外面，面对一堆飞机、枪手的时候，Mycroft让Sherlock和John离Cam远一点。我总是觉得这是要保护Sherlock和John，他们要抓捕Cam……
结果Sherlock手刃了Cam……我就有点……