diff --git a/quickplots/charts.py b/quickplots/charts.py
index <HASH>..<HASH> 100644
--- a/quickplots/charts.py
+++ b/quickplots/charts.py
@@ -88,6 +88,10 @@ class AxisChart(Chart):
         return list(self._all_series)
 
 
+    def series(self):
+        return self._all_series[0]
+
+
     def add_series(self, series):
         if not isinstance(series, Series):
             raise TypeError("'%s' is not a Series" % str(series))
diff --git a/tests/test_axis_charts.py b/tests/test_axis_charts.py
index <HASH>..<HASH> 100644
--- a/tests/test_axis_charts.py
+++ b/tests/test_axis_charts.py
@@ -91,6 +91,13 @@ class AxisChartPropertyTests(AxisChartTest):
         self.assertEqual(chart.all_series(), [self.series1])
 
 
+    def test_series_refers_to_first_series(self):
+        chart = AxisChart(self.series1)
+        self.assertIs(chart.series(), self.series1)
+        chart = AxisChart(self.series1, self.series2, self.series3)
+        self.assertIs(chart.series(), self.series1)
+
+
     def test_can_update_axis_labels(self):
         chart = AxisChart(self.series1)
         chart.x_label("Input")
Add Series property to refer to first Series