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:
| No. in series | No. in season | Title | Directed by | Written by | Original air date |
| --- | --- | --- | --- | --- | --- |
| 158.0 | 1.0 | "Thrill" | Martha Mitchell | René Balcer | September24,1997 |
| 159.0 | 2.0 | "Denial" | Christopher Misiano | René Balcer & David Shore | October8,1997 |
| 160.0 | 3.0 | "Navy Blues" | Jace Alexander | Kathy McCormick & Dick Wolf | October15,1997 |
| 161.0 | 4.0 | "Harvest" | Matthew Penn | I. C. Rapoport & René Balcer | October29,1997 |
| 162.0 | 5.0 | "Nullification" | Constantine Makris | David Black | November5,1997 |
| 163.0 | 6.0 | "Baby, It's You" | Ed Sherin | Jorge Zamacona | November12,1997 |
| 164.0 | 7.0 | "Blood" | Jace Alexander | Craig Tepper & René Balcer | November19,1997 |
| 165.0 | 8.0 | "Shadow" | Matthew Penn | Richard Sweren | November26,1997 |
| 166.0 | 9.0 | "Burned" | Constantine Makris | Siobhan B. O'Connor | December10,1997 |
| 167.0 | 10.0 | "Ritual" | Brian Mertes | Kathy McCormick & Richard Sweren | December17,1997 |
| 168.0 | 11.0 | "Under the Influence" | Adam Davidson | René Balcer | January7,1998 |
| 169.0 | 12.0 | "Expert" | Lewis H. Gould | David Shore & I. C. Rapoport | January21,1998 |
| 170.0 | 13.0 | "Castoff" | Gloria Muzio | David Black & Harold Schecter | January28,1998 |
| 171.0 | 14.0 | "Grief" | Christopher Misiano | Suzanne Oshry | February4,1998 |
| 172.0 | 15.0 | "Faccia a Faccia" | Martha Mitchell | René Balcer & Eddie Feldmann | February25,1998 |
| 173.0 | 16.0 | "Divorce" | Constantine Makris | Barry M. Schkolnick | March4,1998 |
| 174.0 | 17.0 | "Carrier" | James Ranelli | David Black | April1,1998 |
| 175.0 | 18.0 | "Stalker" | Richard Dobbs | Kathy McCormick | April15,1998 |
| 176.0 | 19.0 | "Disappeared" | David Platt | Richard Sweren & William N. Fordes | April22,1998 |
| 177.0 | 20.0 | "Burden" | Constantine Makris | David Shore & I. C. Rapoport | April24,1998 |
| 178.0 | 21.0 | "Bad Girl" | Jace Alexander | Richard Sweren & René Balcer | April28,1998 |
| 179.0 | 22.0 | "Damaged" | Constantine Makris | Janis Diamond | May6,1998 |
| 180.0 | 23.0 | "Tabloid" | Brian Mertes | David Black & Alec Baldwin | May13,1998 |
Question:
the first episode in this season had what number in the series? 
Answer:
158.0