星際大爭霸

im·per·ti·nent /ɪmˈpəːtɪnənt US -əːr-/ adj
rude and not respectful, especially to someone who is older or more important
= cheeky

a can of worms---A source of unforeseen and troublesome complexity.
If you open a can of worms, you do something that will cause a lot of problems and is, on balance, probably going to cause more trouble than it's worth.

let the cat is out of the bag---Disclose a secret.
get some chow

i am a soft touch.----One who is easily persuaded or taken advantage of.

this is a witch hunt.----An investigation carried out ostensibly to uncover subversive activities but actually used to harass and undermine those with differing views.

ex·on·e·rate /ɪgˈzɔnəreɪt US ɪgˈzɑː-/ v [T]
to state officially that someone who has been blamed for something is not guilty

To zero in on a target means to aim at it or move towards it.
He raised the binoculars again and zeroed in on an eleventh-floor room.

an insidious change or problem spreads gradually without being noticed, and causes serious harm