Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Confessional (TV series)
Table title:
Episodes
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > No. </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Directed by </th><th colspan=1 rowspan=1 > Written by </th><th colspan=1 rowspan=1 > Original air date </th><th colspan=1 rowspan=1 > UK viewers (millions) </th></tr>
<tr> <th colspan=1 rowspan=1 > 1 </th><td colspan=1 rowspan=1 > "Episode 1" </td><td class="highlighted"  colspan=1 rowspan=1 > Gordon Flemyng </td><td class="highlighted"  colspan=1 rowspan=1 > James Mitchell </td><td class="highlighted"  colspan=1 rowspan=1 > 4 October 1989 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <th colspan=1 rowspan=1 > 2 </th><td colspan=1 rowspan=1 > "Episode 2" </td><td colspan=1 rowspan=1 > Gordon Flemyng </td><td colspan=1 rowspan=1 > James Mitchell </td><td colspan=1 rowspan=1 > 11 October 1989 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <th colspan=1 rowspan=1 > 3 </th><td colspan=1 rowspan=1 > "Episode 3" </td><td colspan=1 rowspan=1 > Gordon Flemyng </td><td colspan=1 rowspan=1 > James Mitchell </td><td colspan=1 rowspan=1 > 18 October 1989 </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 4 </th><td colspan=1 rowspan=1 > "Episode 4" </td><td colspan=1 rowspan=1 > Gordon Flemyng </td><td colspan=1 rowspan=1 > James Mitchell </td><td class="highlighted"  colspan=1 rowspan=1 > 25 October 1989 </td><td colspan=1 rowspan=1 > N/A </td></tr>
</table>
Question:
How was the Confessional series released in October 1989?
Answer:
The Confessional series were aired in four parts from 4 to 25 October 1989.