精選答案伊萊斯·克利夫頓－沃德（Elise Clifton-Ward，安吉麗娜·朱莉飾）為倫敦警察廳工作，受警官約翰·艾奇遜（John Acheson，保羅·貝坦尼飾）指揮，她現(xiàn)在正被法國警察跟蹤。艾奇遜耗費了數(shù)年時間來追捕伊萊斯的前男友亞歷山大·皮爾斯（Alexander Pearce），他相信這個人從俄羅斯黑幫中竊取了7.44億英鎊的稅款，并且進行了完全的面部整容。在一個咖啡廳中，伊萊斯收到了皮爾斯的紙條：坐上到威尼斯的火車，挑選一個凡夫俗子，并讓警察相信這個誘餌就是他。而后伊萊斯燒掉了紙條，然后設(shè)法躲過了警察并坐上了到威尼斯的火車。
在火車上，伊萊斯選擇了一位美國社區(qū)大學(xué)的教師弗蘭克·圖珀洛（Frank Tupelo，約翰尼·德普飾）。她對他進行各種暗示，看起來一段浪漫感情就要開始了。與此同時，警方成功的從伊萊斯燒掉的紙條中讀取了信息，并就她的約會地點和詭計進行了部署。另一方面，警方內(nèi)部知道約會地點卻不知道詭計的告密者將這一信息告知了黑幫頭目雷金納德·肖爾（Reginald Shaw，史蒂文·伯克夫飾）。肖爾曾被皮爾斯偷走了23億美元。得知皮爾斯和伊萊斯正在前往威尼斯的火車上，肖爾立刻趕赴威尼斯。
伊萊斯邀請弗蘭克住進了她被安排好的在Royal Hotel Danieli的房間。皮爾斯給伊萊斯留下了進一步的指示：參加舞會。被留在住處的弗蘭克不久遭遇了肖爾追捕上門的手下。在逃跑過程中，弗蘭克被威尼斯警察扣留，表面上保證他的安全，實際上卻很腐敗的警官為了得到抓住皮爾斯的賞金而準(zhǔn)備把他交給肖爾的人。最后一刻，伊萊斯出現(xiàn)救走了弗蘭克并一塊逃走，肖爾的人馬開著一艘大船在后面緊追不舍。在機場邊，伊萊斯督促帶著錢和護照的弗蘭克回家以保證安全。
伊萊斯倫敦警察廳臥底特工的身份暴露了，她因為有著同情皮爾斯的嫌疑而被停職。由于顧及弗蘭克的安全，伊萊斯同意參與警方追捕皮爾斯而設(shè)的圈套。在舞會上，伊萊斯四處游走努力在人群中分辨出皮爾斯，這時，一個人在她面前的桌子上放了一個信封然后迅速消失了。伊萊斯意識到這個信封是給自己的，并且堅信那個人就是皮爾斯本人。所以她喊著皮爾斯的名字，試圖從人群中找到他，但被突然到來的弗蘭克打斷了。弗蘭克聲稱自己愛上了伊萊斯并邀請她跳舞，結(jié)果被警察們拖了出去。伊萊斯打開信封后，發(fā)現(xiàn)上面寫著一個新的會面地點，于是立刻乘船出發(fā)前往此地；但在船上被肖爾及其手下抓住了。警方正在另一艘船上小心的跟蹤著他們，弗蘭克則被戴上了手銬以防止他破壞行動。
當(dāng)?shù)竭_(dá)目的地后，肖爾將伊萊斯囚禁了起來，威脅她，要求她吐露藏錢的地點。警方通過房屋內(nèi)部的監(jiān)控設(shè)備監(jiān)視著整個場景。艾奇遜不顧伊萊斯的安全，一再拒絕警方用狙擊手射擊的請求。趁著警方在監(jiān)控的空檔，弗蘭克從船上逃走了。他找到了肖爾，宣稱自己就是皮爾斯，并且許下條件說如果伊萊斯能夠安全離開他就會取出保險箱給他們。肖爾并不信任他，威脅弗蘭克如果他不打開保險箱他們就把伊萊斯殺掉。警察總督瓊斯（提摩西·道爾頓飾）趕到了警方監(jiān)視地，越過艾奇遜命令狙擊手開槍殺死了肖爾和他的手下。瓊斯解除了伊萊斯的停職，但隨即和她終止了雇傭關(guān)系。
收到皮爾斯在不遠(yuǎn)處出現(xiàn)的電報后，艾奇遜急匆匆的趕赴警方逮捕嫌疑人的地點。然而，這個所謂的嫌疑人只是個游客，他只是跟隨收到的一條手機短信行動，短信大意是要他出現(xiàn)在某個地點，然后就會得到報酬。同時，伊萊斯告訴弗蘭克她愛他，但她也愛著皮爾斯。弗蘭克想出了一個“辦法”來解決這一困境：令伊萊斯大吃一驚的是，弗蘭克正確輸入了保險箱的密碼，這證明弗蘭克就是真正的亞歷山大·皮爾斯。他和伊萊斯隨即離開，在保險箱里留下了一張包括他全額稅款的支票給警方。認(rèn)識到真相后，艾奇遜準(zhǔn)備接著追捕皮爾斯，但瓊斯阻止了他，理由是既然皮爾斯已經(jīng)支付了全額稅款，那么他的罪名就僅剩下了從已經(jīng)死亡的黑幫頭目手上偷錢。瓊斯下令結(jié)案，這讓艾奇遜非常沮喪。弗蘭克和伊萊斯在一起開始了他們新的人生。
Elise Clifton-Ward (Angelina Jolie) is being followed by French Police who are working with Scotland Yard under the direction of Inspector John Acheson (Paul Bettany). Acheson has spent years hunting Alexander Pearce, a lover of Elise, who owes £744 million in back taxes, and is believed to have received plastic surgery to alter his appearance. At a Parisian cafe, Elise receives written instructions from Pearce: Board the train to Venice; pick out a man; let the police believe that he is Pearce. Elise burns the note, evades the police and boards the train.
On the train, Elise selects Frank Tupelo (Johnny Depp), an American mathematics teacher from a community college in Wisconsin. She spends much time with him, seeming to start a romance. Meanwhile, the police have managed to salvage the ashes of her burned note and assembled them to extract information regarding her rendezvous, as well as her ruse. Aware of her location, but not of the ruse, an informer from the police station communicates to Reginald Shaw (Steven Berkoff), the mobster from whom Pearce stole $2.3 billion, that Pearce is traveling with Elise on the train to Venice. Shaw immediately proceeds to Venice.
Elise invites Frank to stay with her at her suite in the Hotel Danieli in Venice. Pearce leaves further instructions for Elise to attend a ball. Elise abandons Frank, who is then chased by Shaw's men. While trying to escape from them, Frank is detained by the Italian police, ostensibly for his own safety, only to have a corrupt inspector turn him over to Shaw's men in exchange for the bounty that has been placed on Pearce's head. Elise rescues Frank just before he is handed over, leading Shaw's men on an extended boat chase and finally escaping. She leaves Frank at the airport with his passport and money, urging him to go home for his own safety.
Elise is revealed to be an undercover Scotland Yard agent who was under suspension for her suspected sympathies with Pearce. She agrees to participate in a sting operation. At the ball, as Elise tries to spot Pearce in the crowd, an envelope is placed on the table in front of her, but the man disappears into the crowd. She tries to follow him through the crowd, but is stopped by Frank. Frank claims to be in love with Elise and invites her to dance with him. After the police surprise Frank, Elise reads the note. She leaves suddenly in her boat to be tailed by Shaw. Both parties are followed by the police. Frank is held handcuffed.
When Elise arrives at the destination, Shaw takes her prisoner, threatening to harm her unless she reveals the location of the stolen money. The police monitor the situation inside the rendezvous room through audio and video links. Despite Elise's peril, Acheson repeatedly turns down police requests to intervene with their snipers. While the police are occupied in monitoring the situation, Frank escapes from the police boat and confronts Shaw, claiming to be Pearce and offering to open the safe if Elise is allowed to leave safely. Shaw is skeptical and makes a counter offer that Frank should open the safe if he does not want to see Elise tortured by his men. Chief Inspector Jones (Timothy Dalton) arrives at the police stake-out, overrides Acheson, and orders the snipers to fire, killing Shaw and his men. To Elise's obvious pleasure, Jones lifts her suspension and terminates her employment.
Acheson, receiving a message that Pearce has been found near their position, rushes to find the police have detained an Englishman. The man, Lawrence Mason, says he is a tourist following written instructions received via his mobile phone, for which he has been receiving payments. Elise tells Frank that she loves him, but she also loves Pearce. Frank then suggests a "solution" to this dilemma; to Elise's surprise, he opens the safe by entering the correct code, thus revealing that he is really Alexander Pearce. When the police open the safe they find only one cheque: It is for £744 million. Acheson prepares to chase after Pearce, but Jones overrides him, reasoning that with the taxes now paid in full, Pearce's only crime is that he stole money from a now-dead gangster. Jones orders the case to be closed, much to Acheson's frustration. Frank/Alexander and Elise sail away together.