Timeline

== 2015 ==
January – Rick Brady is promoted to Detective Inspector.
February-April – 1. Suffer Little Children
April – Jeremy Anderson completes DTS and is promoted to First Class Constable.
May – The taskforce is expanded into a full unit, with four teams (four sergeants, eight senior constables and fifteen constables/first class constables). Andrea Dobbs and Riley Evans promoted to Senior Constable. Geneviève Morin is promoted to First Class Constable.
May-June – 2. Meat Market
July – Kimberley McAllister and Adam Fellows complete DTS and join the squad.
July-August – 3. Who Will Guard the Guards
September – Jane Ashton falls pregnant with her second child and she decides to take the full 12 months' leave.
September-October – 4. Breathless
November-December – 5. Bed of Roses
== 2016 ==
February-March – 6. Burning Desire
April-May – 7. Dead in the Water
July-August – 8. Fourteen Words
August – After she is attacked by Jaeger, Talayeh Khavari transfers out of MCS, applying for a position with the Australian Federal Police.
September – Detective First Class Constable Tony De Luca joins MCS, along with Detective Constables Cecilia Andrews and Sean Rose; Jim Troughton takes a leave of absence and Mel steps in as Acting Detective Senior Sergeant. Jane Ashton returns to duty. Also, Alan Gardiner is diagnosed with stage 4 Acute Myelogenous Leukaemia.
September-October – 9. In the Name of the Father
November-December – 10. Born that Way
== 2017 ==
January – Mel is promoted to Senior Sergeant and transfers to Special Crime Squad; Sergeant Mandy O’Mara joins the Squad. Meanwhile the squad is also preparing for Alan Gardiner's funeral. 
February-March – 11. One for All
February – Beth Goldstein takes time off for maternity leave, with Vincent Nguyen covering her absence.
March – Erin Hensman replaces Tony De Luca.
April – 12. Home Is Where the Heart Is
June – 13. Misjudged
July – Following his success in handling the investigation and conviction of Gary Adkins, Rick is offered, and accepts, a Commander’s position. Jim steps up as acting Detective Inspector, with Duncan as acting Detective Senior Sergeant while Wes is SIO on the bikie case (MCS14). Tony resigns from the police force and Erin Hensman takes his place on Team Four, part way through the investigation.
August-September – 14. Turf War
David Farrier takes over as Detective Inspector in charge of the unit.
November – 15. Watcher in the Night
== 2018 ==
January-February – 16. Carbon Copy
March – Duncan's father dies and he takes time off to go to Scotland for the funeral.
March-April – 17. Do No Harm
June – 18. A Woman Scorned
August – 19. Honour Among Thieves
October-November – 20. Ghosts of the Past 
December – After the death of one of the uniformed officers, Frank Quartermain begins to exhibit signs of PTSD. David is also is stood down, and Natalie takes his place. Charli Underwood is promoted to Senior Constable and takes Frank's place.
== 2019 ==
January – 21. New Beginnings
March-April – 22. Crash Course
May-June – 23. Money to Burn
July – Timothy Chute takes over as Deputy Commissioner (Specialist Services)
July-August – 24. Black Friday
September – Kyle is killed in action and Isabelle is promoted to Detective Sergeant, taking his place leading Team Two. 
October – 25. Don't Bank on It 
December – 26. No Rest for the Wicked
February-March – 27. In the Eye of the Beholder 
May – 28. Hot Shot
July – 29. Out of the Cold
September-October – 30. Lost Boys 
November – Max Walker takes over from Charles Branson as Assistant Commissioner (State Crime) 
November-December – 31. Line of Fire 
== 2021 ==
Late January – Natalie is diagnosed with ovarian cancer and takes time off work to get it investigated.
February – 32. A Pound of Flesh
April-May – 33. By Mine Own Hand
June-July – 34. Crossing the Line
September – 35. Thicker than Water
November – 36. Once Bitten
== 2022 ==
January-February – 37. Poison XXXX
April – 38. A Study in White
June – 39. Homeless XXXX
August-September – 40. A Thousand Words