therein lies the problem

:  in or into that place, time, or thing

:  in that particular or respect

:  to be or to stay at rest in a horizontal position :  be prostrate :  rest, recline

:  to reside temporarily :  stay for the night :  lodge

:  to remain inactive (as in concealment)

:  lay

:  the position or situation in which something lies (see ¹lie)

:  the haunt of an animal (such as a fish) :  covert

:  to make an untrue statement with intent to deceive

:  to create a false or misleading impression

:  to bring about by telling lies

:  an assertion of something known or believed by the speaker or writer to be untrue with intent to deceive

:  an untrue or inaccurate statement that may or may not be believed true by the speaker or writer

:  something that misleads or deceives

:  a question raised for inquiry, consideration, or solution

:  a proposition in mathematics or physics stating something to be done

:  an intricate unsettled question

:  dealing with a problem of conduct or social relationship

:  difficult to deal with