Amanda Wainwright is a single mom who works as a US Postal Inspector while son Preston is a forensics lab intern. Amanda's partner is Mitch who helps deliver a message after each case is solved.
Ren Is the New BlackWhen Cynthia Ren's crime syndicate returns, it's up to Amanda and Mitch to figure out how to stop the fraud; the woman responsible for Preston's father's death is getting out of prison.
Diagnosis: Negative
E2
Diagnosis: NegativeAmanda and Mitch investigate a double-billing scheme where patients' insurance is billed for unnecessary treatments and the bills pile up; Amanda and Mitch find that Preston is closer to the crime than they thought.
The Dog House
E3
The Dog HouseWhen a grocery store is robbed, losing hundreds of money orders in the process, Amanda and Mitch investigate; Noah puts on his own play for school.
Scam School
E4
Scam SchoolScam schools teach young college students how to commit scams; Amanda and Mitch are on the case, with more help from Noah than they could have imagined.
Shields and Potions
E5
Shields and PotionsAmanda and Mitch investigate a robbery at a local post office; Preston and Veronica help Noah compete in his favorite live action role-playing game, "Shields and Potions."
What's in a Name?
E6
What's in a Name?A university discovers that a student is using a false identity; the gang must figure out who the student really is.
Smells Like Christmas Spirit
E7
Smells Like Christmas SpiritThe Inspectors are on to a holiday scam using fake charity to steal donations; the gang dog-sits a puppy whose owner mistreats her.
Smile Like You Mean It
E8
Smile Like You Mean ItAfter a string of mailbox explosions, Amanda and Mitch are on the case to find the person responsible; the gang helps Noah overcome new pressures when his life starts to change rapidly.
Blank Canvas...of Corruption
E9
Blank Canvas...of CorruptionA shipment of makeup contains a chemical harmful to the skin; the gang finds themselves tied up when they help Noah house sit for his aunt.
Turtle Trouble Beach Party
E10
Turtle Trouble Beach PartyTurtles are being smuggled through the mail; the inspectors must save the turtles and catch the culprit; the gang takes a trip to the beach, but Preston gets himself into trouble when he becomes jealous of Veronica's new boyfriend.
Mother Nature
E11
Mother NatureScammers take advantage of people after a hurricane; Veronica starts to date a trivia host and enlists Preston to help her with her relationship.
Hurtful Words
E12
Hurtful WordsA young student is bullied at a local middle school; the inspectors find that there is more to it than hurtful words; Veronica realizes her new boyfriend isn't who he seems to be.
Senior Week
E13
Senior WeekThe inspectors investigate a diamond heist at an airport; Preston and Noah help Veronica get back on her feet after a bad breakup.
Diner Dash
E14
Diner DashAmanda and Mitch go under cover at a local diner to catch the crime family responsible for a diamond heist; Noah enlists Preston and Veronica to help him with an "escape room" opportunity, but they soon realize it is more than just a game.
Sticker Shock
E15
Sticker ShockWhen a toxic sticker ends up in the hands of a young girl, the inspectors have to find out who is responsible; Preston is excited to work on a political campaign, but has his work cut out for him when he is put in charge of the politician's son.
Making Chemistry
E16
Making ChemistryA college crook decides to seek help from the Inspectors after he gives up on his plans to deliver an acidic spray-rigged package to their desired target; Preston makes a profile on an online dating site and worries about his profile picture.
Moving Still
E17
Moving StillActor Erica-Marie Sanchez offers unique details about an episode where Preston recovered as the Inspectors investigated and insurance fraud scam.
School's In Session
E18
School's In SessionErica-Marie Sanchez looks back at an episode where Mitch and Amanda uncovered a school that teaches people different types of scams.
And the Winner Is...
E19
And the Winner Is...A restaurant falls victim to a scam; the scam leads back to a big-time cook; Preston wins a good citizen award at Jamestown University.
Kickin It
E20
Kickin ItA former soccer star puts together a fake charity that "funds" a children's soccer team; Preston and Veronica are suspicious of Noah's recent absence.
Lost Angeles
E21
Lost AngelesMitch and Amanda go across the country to assist on a television show about postal inspectors; Preston is left home alone with Veronica's new dog, but it goes missing and it's up to him to find it.
Flyers `n Resumes
E22
Flyers `n ResumesMitch and Amanda are called to investigate a roofing scam; Jamestown University holds its annual job fair, but Preston's mind is preoccupied with how his relationship will fare with Veronica after graduation.
My Father's Footsteps
E23
My Father's FootstepsThe entire inspectors community is hit hard when a police officer dies in the line of duty; Preston and the gang must find the child of the fallen officer before another tragedy occurs.
One Step at a Time
E24
One Step at a TimeAmanda, Mitch and Georgia rush to the courthouse to put away a longtime nemesis; the gang gets ready for graduation and has a hard time saying goodbye.
The Name Game
E25
The Name GameA look back at an episode when the gang investigated a missing person's cold case.
Cast of Season 4
Jessica LundyAmanda Wainwright
Bret GreenPreston Wainwright
Terry SerpicoMitch Ohlmeyer
Harrison KnightNoah Waldman
Erica-Marie SanchezVeronica Ruiz
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