Lets break down the light and shadows each Pearson struggles with in tonights episode.
Kate and Toby
The show opens on Kate and Toby arriving home from Philadelphia.
Kate is quietly fuming over a text she saw from Tobys female cross-fit friend Kara.

Ron Batzdorff/NBC
When Kate confronts him, Toby insists Kara isnt a threat.
However, during the party, Kate learns Toby switched gyms two weeks ago.
All party long she stares coldly at Toby.
When the party ends, at Tobys insistence, Kate confronts him.
Kate then accuses Toby of avoiding being home with her and Jack.
If its not about Kara, she doesnt understand what its about.
Like the doctor had predicted might happen, Jack can at least see lights and shadows.
He flies to California to go to the appointment with her and Miguel, who thinks Randall is overreacting.
The doctor gives Rebecca a series of memory tests.
After the tests, the three stay at the hospital to wait for results.
The results arent great.
The doctor says Rebecca has mild cognitive impairment.
Miguel apologizes to Randall for not having been concerned sooner, and the two embrace over their shared fear.
Randall tells Miguel theyll take things one step at a time.
A few scenes later, Jack is alone at home looking through newspaper classifieds.
Then, hes at dinner with Rebecca.
Shes talking about her fathers upcoming birthday party when suddenly Jack breaks up with her.
He doesnt think Rebecca belongs with a part-time mechanic who cant afford to buy her dinner.
He walks out, leaving Rebecca devastated.
When Rebecca arrives at Daves party without Jack, her mother, Janet, is sympathetic.
When Rebecca says she loves Jack, Janet says Rebecca hasnt been with Jack long enough to know that.
Then Janet says enduring love isnt necessarily about flashy love involving spontaneous road trips.
Its more about the small things; your partner should be reliable and dependable thats why she loves Dave.
So, she admits Dave told Jack he wasnt good enough for Rebecca.
His first date is too smart, his second date is a bigot.
Kate leaves him, and Kevin approaches the brunette.
In a classic rom-com meet-cute, Kevins approach causes the woman to drop something her phone.
They bond over the fact that the dog on her lock screen is named after Rocky Balboa.
Then they sit down and start chatting about their favorite foods, music, etc.
Kevin and Lizzie have great chemistry but when Kevin kisses her, she stops him and reveals shes married.
She only entertained the date because Kevin is her celebrity hall pass.
She apologizes and leaves.
Kevins shadow is his unlucky love life and uncertain future… perhaps Sophie is about to be his light.
But soon, thats not his biggest present problem.
He walks downstairs for a drink and encounters a man in a hoodie, armed with a gun.