观众和媒体对于本季的关注，几乎全都放在Morgan Jones（Lennie James）这个角色身上——毕竟这个角色起到桥接该剧和母剧《行尸走肉》（The Walking Dead）的重要作用，也是《行尸走肉》和《行尸危途》开播以来第一次出现情节交叉的情况。因为《行尸危途》的故事时间要比《行尸走肉》早很多，因此观众在《行尸危途》中看到的Morgan是「过去的Morgan」——《行尸走肉》首集中的Morgan，甚至更早。在遇到Rick等人之前，Morgan有过另外的朋友、另外的敌人和另外的威胁。@www.airuib.com
第四季的故事地点主要设定在德州，故事时间可能会发生一定幅度的时间跳跃。Alicia Clark、Victor Strand和Luciana Galvez都还活着。其中Luciana已经消失了很长一段时间（这是第三季Luciana中途离开后我们第一次见到这个角色），她如何回归、如何找到Alicia和Strand都耐人寻味。Madison Clarke和Nick也仍然是核心角色。除了这五位，其他回归角色的身份本季都可能发生变化（有些不再是常规角色，有些大幅减少了戏份，有些干脆不再出现）。
除了Morgan之外，本季还新增了多个重要角色：
Jenna Elfman扮演生存者Naomi，在僵尸末日时代完全有能力独自生活——事实上她已经独自生活很长时间了。当她遇到Madison及其家人后，自然而然地保持着高度戒心。随着剧情发展，观众会发现她为什么对人总是冷冰冰的，为什么与别人保持距离。即便如此，她还是与某些角色（特别是Alicia）产生了某种共鸣，这让她自己都感觉惊讶。她有时给人幽默的感觉，有时又给人轻浮的感觉。
Maggie Grace扮演生存者Althea，她看起来就像是《行尸走肉》中的Maggie。她在僵尸末日时代的生存技能，很大程度上来源于僵尸危机爆发前积累的经验。她携带了一些令人印象深刻的武器，好奇心很强，而且善于理解别人，这给了她战术优势。Althea从来不相信「不劳而获之利益」，只相信自己的艰苦奋斗。她有一个坚定的目标，Strand似乎对这个目标颇感兴趣。
Evan Gamble扮演多集角色Ennis，一个缺陷明显、外表凌乱的男人，他永远都只关心自己。
Kevin Zegers扮演一个神秘角色。
本剧集是BBC 2台2000年正式推出的以青年人为题材和对象的系列情景喜剧，创意和编剧均由Steven Moffat一人担当。三男三女的主要人物构成很容易使人联想到当时正走红（其实已经在走下坡路）的《Friends》，因此很有不少根本没看过本剧的媒体人士和评论家想当然地将本剧称作英国版的《Friends》，而在那些有幸欣赏过本剧的观众们看来，《Coupling》在情节设定、人物表演、喜剧元素的设计和表现等诸多方面所达到的水平，要比《Friends》高几个档次。相比之下，《Friends》只能说是一部“业余”水平的好作品而已。当然总体来说，英剧的水准本身就高于美剧，这和英剧注意保持创意、编剧一体化是分不开的，美剧的创意一般也就为最初几集编剧，以后主要的编剧工作都是由其它编剧根据最初的角色设定来自由发挥，编剧队伍的构成也是不断变化，老的走新的来，造成美剧情节连贯性差甚至前后矛盾，故事往往缺乏深度，人物性格平面化，缺少发展。这都是题外话了。
《Coupling》的主要人物包括优柔寡断、性格不成熟的帅哥Steve，Steve的莫逆之交、举止语言古怪、总也找不到女友的Jeff，头脑简单、外表性感的“donkey” Patrick三位对Porn、特别是lesbian porn非常热中的男士，以及Steve的前女友、神神叨叨、擅用性感作武器的Jane，Steve的继任女友、Jeff的同事、曾经非常“不羁”（包括和Jeff还有Patrick）过的Susan，Susan的莫逆、对衰老和肥胖极度敏感的美容师Sally三位女士。在第一集中，Steve决定“再次”和女友Jane分手，结果却被Jane三言两语引诱到洗手间亲热；Patrick想把和Susan的关系再进一步，却被告知根本不存在什么“关系”； Susan在洗手间碰到匆忙出来买Durex的Steve，向他表示好感，两人订下约会以后Steve钻进隔间继续……。本剧的主线包括Steve和 Susan之间逐渐正式起来的关系，Jeff寻找艳遇过程中的种种意外以及后来和上司发展出来的一段关系，Patrick和Sally之间若有若无到若即若离再到情深难舍的感情发展，还有Jane在事业和异性关系中的各种奇事，等等。
本剧在情节设计中所达到的精致和完美程度让人叹为观止，而六位当时并不算大明星的青年演员的所展现精湛演技更是具有顶尖演员的水平，无怪乎播出之后立刻走红大洋两岸，在IMDB、AMAZON和BBC网站可以领略到其受欢迎的程度。2002年底，第3季播毕，故事情节基本告一段落。美国NBC看到这部“英国版《Friends》”在英美两地均广受欢迎，觉得正好可以搬来做2004年终于要关张的《Friends》的接班人，于是2003年大张旗鼓地决定翻拍美版《Coupling》。美国的fans本来以为这是件好事，没想到NBC的翻拍愚蠢地采用了全台词照搬的方法，虽然个人没看过，不过也可以想象到有多恶心，结果只播出一集Pilot就因为骂声太大而整个计划搁浅（这点上美国佬是值得学习的，不象中国有些搞影视的骂声越大越要上）。在这里http://www.nbc.com/Coupling/可以看到这个计划的尸体，还有一些彻底走了味儿的剧照。
2003年底，本剧获得英国喜剧奖（BCA）最佳电视喜剧奖。BBC已经在2004年正式开拍并播出第4季，不过Jeff这个人物将不再出现，而代之以新角色——经营Sci-Fi书店的Oliver，由Richard Mylan扮演。从已经播出的几集来看，应该说在更换主要角色之一的背景下，基本保持了前3季的水准，但是同时也流露出对前3季中成功情节进行拷贝的迹象，希望这仅仅是偶然。
Two's company, three's a crowd... so what do you do with six? On average, men and women think about sex every six seconds. Shorten that to every second, and you've got Coupling. It's more than just a one night stand!
When a couple gets together, it's never just the two of them - they also bring baggage - and Susan (Sarah Alexander) and Steve (Jack Davenport) are no exception. Their baggage is a crowd of best friends and exes who talk about all aspects of sex and relationships on their never-ending quest to find true love. Perhaps, perhaps, perhaps...
Susan Walker is a beautiful go-getter with an uninhibited attitude who used to date Patrick Maitland (Ben Miles), the sextet's charismatic, cocky player, London's king of conquests - a guy who's just too cool to worry about being smart. Attractive Sally Harper (Kate Isitt) is a beauty therapist who is Susan's unashamedly vain best friend, who aggressively battles aging with heavy doses of moisturizer and men - including Patrick.
Meanwhile, Steve Taylor, while getting together with Susan, can't seem to shake loose from his vivacious and slightly vacuous ex-girlfriend Jane Christie (Gina Bellman), a woman supremely confident in her ability to seduce anyone of either sex, and who refuses to be dumped unless she's the one doing the dumping. Jeff Murdoch (Richard Coyle) is Steve's "porn buddy" who is, in equal parts, obsessed and bewildered by actual sex; charming in his way, but with an uncanny ability to say the wrong thing at the worst possible time. He works in the same office as Susan, with whom he had a disastrous and unsuccessful one-night fling.
Coupling has been honoured with the prestigious Silver Rose of Montreux, Best TV Comedy Award, and is recent winner at the 2003 British Comedy Awards.
With a new guy on the scene, a baby on the way, commitment in the air, and love on the horizon, the dynamics of the six friends are definitely changing.
At the end of last season Susan and Steve discovered they were pregnant (well, mostly Susan), confirmed bachelor Patrick and Sally finally admitted their true feelings for each other, and poor Jane was left on her own, once again.
But it's not all doom and gloom for Jane. As the new season opens, things are looking up. There's this guy called Oliver, who has his eye on her. Is it possible that lifetime loser in love Oliver might just get somewhere with lifetime loser in love Jane? Trouble is, his apartment is a little "un-edited" and his living room has lost the battle with magazine nudity...
Susan and Steve are now well and truly an item. So why is he dreaming about being executed by a fetus with an axe?
Meanwhile Sally and Patrick are settling into their new relationship. But since the dawn of time, men and women have been falling in love - and men have been trying to get home straight afterwards. Can fallen playboy Patrick ever find his way back from the enchanted glade of his one true love and get a decent night's sleep?