After watching this weeks episode, Casey doesnt even seem to beparticularlypathologically obsessed with Jane or Pete.
Yknow, other thankidnapping their kid.
No, its Caseys sister we never knew we needed to be worried about.

Credit: Bob D’Amico/ABC
Lynn is stone-cold crazy.
Playing popcorn with storylines might be a little much, but at least it keeps the story moving.
The episode opens with Casey talking to who we now know to be her pregnant sister, Lynn.
Lock it up, Casey, if youre going to do something insane, at least do it well!
Thats when Lynn and her boyfriend Russ exchange a look, and you know everythings about to go sideways.
We were wondering if we could have some more money, says Lynn.
Maybe I tell [the police] you lied to us, Lynn says sweetly to her sister.
So far, me and Russ, were just taking care of your boss kid.
(Double yikes.)
Something must be in the water, because Jane is acting a little…rashlytoo.
Jane texts the number back: I have your money.
At the police station, Birds team has tracked down PJ the Drug Dealer.
The truth is just another story.
And a good storys got to be told right.
Sounds like PJs been learning from the best.
Caseys stories could use a little work though.
She does well enough getting into Janes house and casually asking Ali where Jane keeps her bank receipts.
But when Ali mentions that Jane is currently at Petes house, things get a little shaky.
Totally…
Luckily, Jane is very close to getting to the bottom of this.
Pete has come to and is screaming at Jane, You could have killed me!
But Jane doesnt have time for whining (or, yknow,laws).
Youre sleeping with my assistant?
You lazy bastard what, did Bea and Ali turn you down first?
Need a tea bag for that burn, Pete?
Jane tells Pete hes a piece of work, and Sheldon agreesSHELDON!
Of course PJs boss is the person behind the unsaved number that Pete owes so much money.
Pete you finally win back the missus?
Mazel Tov, bitch.
And of course,we knowthat Sheldon never had Lake…
Because Casey has Lake.
Or rather, Caseys scary sister has Lake, and shes not handing her over untilshegetshermoney.
The thing is, liquid assets are running a little thin in the Sadler-Greene family right now.
Lynn wont like that but maybe Russ will listen to reason.
Everything is messed up now, I cant fix this!
No, he has a different idea than handing Lake back over: We pretend it never happened.
The camera shifts to Casey cradling poor Lake.
Casey says that Lynn would never do anything to hurt a child, but Russ doesnt seem so sure.
They sit and wait for Lynn to return.
for her paying your drug debt and not getting her daughter back???
Jane picks up her phone: Bird, its me I know who has her.
Then of course Pete picks uphisphone the second Jane leaves because Pete is The Wooooorst.
He calls Casey and tells her Jane thinks she took Lake.
Hey, Pete, real quick: THATS BECAUSE SHE TOOK LAKE!
But at least Bird knows how now.
That girlfriend: Lynn Collins.
They get an address, and Bird and Jane are on their way.
With no Lake or Lynn in sight.