Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Character | Actor | First Episode | Final Episode | Episode Count |
| --- | --- | --- | --- | --- |
| Kyle Harmon | Evan Ellingson | "Dangerous Son" | "Dishonor" | 18.0 |
| Marisol Delko Caine | Alana de la Garza | "Nailed" | "Countermeasures" | 12.0 |
| Julia Winston | Elizabeth Berkley | "Raising Caine" | "Dissolved" | 9.0 |
| Ray Caine, Jr. | Alex Buck | "Grave Young Men" | "Rio" | 7.0 |
| Kenwall Duquesne | John Heard | "Double Cap" | "Recoil" | 4.0 |
| Ray Caine, Sr. | Dean Winters | "10-7" | "Rio" | 4.0 |
| Susie Keaton | Azura Skye | "Freaks and Tweaks" | "Nothing to Lose" | 4.0 |
| Nick Townsend | Rob Estes | "If Looks Could Kill" | "Internal Affairs" | 4.0 |
Question:
What was the last episode featuring Rob Estes?
Answer:
"Internal Affairs"