Agent: We applied voice recognition software and, using satellites, cast a net Covered? over every landline and cell (Wired and cell phones?)on the globe.
Lex: l don't care how wide your net.Where you can reach to?
lf you don't find Lana, it's not worth the string. It wasn't worth for Lex pulling some strings? Agent: We have a match, sir. She's in Asia. Our GPS puts her (Shows her to be?)just a few miles from central Shanghai.
"Cast a net" - yes. Their surveillance system caught everything in its "net." Landline - wired phone. Wide your net - yes, or "how far your surveillance extended." "String" here is a (rather clumsy imo) reference to the string used to make the "net." "Puts her" - yes. Like putting a pin in a map.