**_Beware of the smooth-tongued liar, even if she’s an attractive young woman_** A mother & daughter in SoCal welcome a foreign exchange student from England into their family to help fill the grievous hole after a tragedy. Unfortunately, this is an exchange student from hell! "Deadly Exchange" (2017) is a made-for-TV drama produced by the same company that released "The Wrong Daughter" with Sydney Sweeney the next year. In fact, they have an identical plot, just with a few alterations. Both understandably lack the artistry of Drew Barrymore's "Poison Ivy," yet they work well enough for a…