A Tangled Web
O, what a tangled web we weave when first we practise to deceive! I know, there is a typo here and the phrase can be considered grammatically incorrect, but it was penned this way by Walter Scott - Author of Ivanhoe.
When anyone tries to deceive another, by lying or making up stories, they will make a mess of the deception. Once you tell a lie, then you will have to make up more lies to support the first lie, and then, even more, lies to support the other lies, and in the end, you have a messy situation.